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An International Standard Serial Number
International Standard Serial Number
(ISSN) is an eight-digit serial number used to uniquely identify a serial publication.[1] The ISSN is especially helpful in distinguishing between serials with the same title. ISSN are used in ordering, cataloging, interlibrary loans, and other practices in connection with serial literature.[2] The ISSN system was first drafted as an International Organization for Standardization (ISO) international standard in 1971 and published as ISO 3297 in 1975.[3] ISO subcommittee TC 46/SC 9 is responsible for maintaining the standard. When a serial with the same content is published in more than one media type, a different ISSN is assigned to each media type. For example, many serials are published both in print and electronic media. The ISSN system refers to these types as print ISSN (p-ISSN) and electronic ISSN (e-ISSN), respectively.[4] Conversely, as defined in ISO 3297:2007, every serial in the ISSN system is also assigned a linking ISSN (ISSN-L), typically the same as the ISSN assigned to the serial in its first published medium, which links together all ISSNs assigned to the serial in every medium.[5]

Contents

1 Code format 2 Code assignment 3 Comparison with other identifiers

3.1 Media vs content

4 Availability 5 Use in URNs

5.1 Problems

6 ISSN variants and labels

6.1 Print ISSN 6.2 Electronic ISSN 6.3 Linking ISSN

7 ROAD 8 See also 9 References 10 External links

Code format[edit] The format of the ISSN is an eight digit code, divided by a hyphen into two four-digit numbers.[1] As an integer number, it can be represented by the first seven digits.[6] The last code digit, which may be 0-9 or an X, is a check digit. Formally, the general form of the ISSN code (also named "ISSN structure" or "ISSN syntax") can be expressed as follows:[7]

NNNN-NNNC where N is in the set 0,1,2,...,9 , a digit character, and C is in 0,1,2,...,9,X ;

or by a Perl Compatible Regular Expressions (PCRE) regular expression:[8]

^d 4 -d 3 [dxX]$.

The ISSN of the journal Hearing Research, for example, is 0378-5955, where the final 5 is the check digit, that is C=5. To calculate the check digit, the following algorithm may be used:

Calculate the sum of the first seven digits of the ISSN multiplied by its position in the number, counting from the right—that is, 8, 7, 6, 5, 4, 3, and 2, respectively:

0 ⋅ 8 + 3 ⋅ 7 + 7 ⋅ 6 + 8 ⋅ 5 + 5 ⋅ 4 + 9 ⋅ 3 + 5 ⋅ 2

displaystyle 0cdot 8+3cdot 7+7cdot 6+8cdot 5+5cdot 4+9cdot 3+5cdot 2

= 0 + 21 + 42 + 40 + 20 + 27 + 10

displaystyle =0+21+42+40+20+27+10

= 160

displaystyle =160

The modulus 11 of this sum is then calculated; divide the sum by 11 and determine the remainder:

160 11

= 14

 remainder 

6 = 14 +

6 11

displaystyle frac 160 11 =14 mbox remainder 6=14+ frac 6 11

If there is no remainder the check digit is 0, otherwise the remainder value is subtracted from 11 to give the check digit:

11 − 6 = 5

displaystyle 11-6=5

5 is the check digit, C.

For calculations, an upper case X in the check digit position indicates a check digit of 10 (like a Roman ten).

To confirm the check digit, calculate the sum of all eight digits of the ISSN multiplied by its position in the number, counting from the right (if the check digit is X, then add 10 to the sum). The modulus 11 of the sum must be 0. There is an online ISSN checker that can validate an ISSN, based on the above algorithm.[9][10] Code assignment[edit] ISSN codes are assigned by a network of ISSN National Centres, usually located at national libraries and coordinated by the ISSN International Centre based in Paris. The International Centre is an intergovernmental organization created in 1974 through an agreement between UNESCO
UNESCO
and the French government. The International Centre maintains a database of all ISSNs assigned worldwide, the ISDS Register (International Serials Data System) otherwise known as the ISSN Register. At the end of 2016[update], the ISSN Register contained records for 1,943,572 items.[11] Comparison with other identifiers[edit] ISSN and ISBN
ISBN
codes are similar in concept, where ISBNs are assigned to individual books. An ISBN
ISBN
might be assigned for particular issues of a serial, in addition to the ISSN code for the serial as a whole. An ISSN, unlike the ISBN
ISBN
code, is an anonymous identifier associated with a serial title, containing no information as to the publisher or its location. For this reason a new ISSN is assigned to a serial each time it undergoes a major title change. Since the ISSN applies to an entire serial a new identifier, the Serial Item and Contribution Identifier (SICI), was built on top of it to allow references to specific volumes, articles, or other identifiable components (like the table of contents). Media vs content[edit] Separate ISSNs are needed for serials in different media (except reproduction microforms). Thus, the print and electronic media versions of a serial need separate ISSNs.[12] Also, a CD-ROM
CD-ROM
version and a web version of a serial require different ISSNs since two different media are involved. However, the same ISSN can be used for different file formats (e.g. PDF
PDF
and HTML) of the same online serial. This "media-oriented identification" of serials made sense in the 1970s. In the 1990s and onward, with personal computers, better screens, and the Web, it makes sense to consider only content, independent of media. This "content-oriented identification" of serials was a repressed demand during a decade, but no ISSN update or initiative occurred. A natural extension for ISSN, the unique-identification of the articles in the serials, was the main demand application. An alternative serials' contents model arrived with the indecs Content Model and its application, the digital object identifier (DOI), as ISSN-independent initiative, consolidated in the 2000s. Only later, in 2007, ISSN-L was defined in the new ISSN standard (ISO 3297:2007) as an "ISSN designated by the ISSN Network to enable collocation or versions of a continuing resource linking among the different media".[13] Availability[edit] The ISSN Register is not freely available for interrogation on the web, but is available by subscription. There are several routes to the identification and verification of ISSN codes for the public:

The print version of a serial typically will include the ISSN code as part of the publication information. Most serial websites contain ISSN code information. Derivative lists of publications will often contain ISSN codes; these can be found through on-line searches with the ISSN code itself or serial title. WorldCat
WorldCat
permits searching its catalog by ISSN, by entering "issn:"+ISSN code in the query field. One can also go directly to an ISSN's record by appending it to "https://www.worldcat.org/ISSN/", e.g. https://www.worldcat.org/ISSN/1021-9749. This does not query the ISSN Register itself, but rather shows whether any Worldcat library holds an item with the given ISSN.

Use in URNs[edit] An ISSN can be encoded as a uniform resource name (URN) by prefixing it with "urn:ISSN:".[14] For example, Rail could be referred to as "urn:ISSN:0953-4563". URN namespaces are case-sensitive, and the ISSN namespace is all caps.[15] If the checksum digit is "X" then it is always encoded in uppercase in a URN. Problems[edit] The util URNs are content-oriented, but ISSN is media-oriented:

ISSN is not unique when the concept is "a journal is a set of contents, generally copyrighted content": the same journal (same contents and same copyrights) have two or more ISSN codes. A URN needs to point to "unique content" (a "unique journal" as a "set of contents" reference). Examples: Nature has an ISSN for print, 0028-0836, and another for the same content on the Web, 1476-4687; only the oldest (0028-0836) is used as a unique identifier. As the ISSN is not unique, the U.S. National Library of Medicine needed to create, prior to 2007, the NLM Unique ID (JID).[16] ISSN does not offer resolution mechanisms like a digital object identifier (DOI) or an URN does, so the DOI is used as a URN for articles, with (for historical reasons) no need for an ISSN's existence. Example: the DOI name "10.1038/nature13777" can be represented as an HTTP string by https://dx.doi.org/10.1038/nature13777, and is redirected (resolved) to the current article's page; but there is no ISSN online service, like http://dx.issn.org/, to resolve the ISSN of the journal (in this sample 1476-4687), that is, a kind of https://dx.issn.org/1476-4687 redirecting to the journal's home.

A unique URN for serials simplifies the search, recovery and delivery of data for various services including, in particular, search systems and knowledge databases.[13] ISSN-L (see Linking ISSN below) was created to fill this gap. ISSN variants and labels[edit] There are two most popular media types that adopted special labels (indicating below in italics), and one in fact ISSN-variant, with also an optional label. All are used in standard metadata context like JATS, and the labels also, frequently, as abbreviations. Print ISSN[edit] p-ISSN is a standard label for "Print ISSN", the ISSN for the print media (paper) version of a serial. Usually it is the "default media", so the "default ISSN". Electronic ISSN[edit] e-ISSN (or eISSN) is a standard label for "Electronic ISSN", the ISSN for the electronic media (online) version of a serial. Linking ISSN[edit] ISSN-L is a unique identifier for all versions of the serial containing the same content across different media. As defined by ISO 3297:2007, the "linking ISSN (ISSN-L)" provides a mechanism for collocation or linking among the different media versions of the same continuing resource. The ISSN-L is one ISSN number among the existing ISSNs, so, does not change the use or assignment of "ordinary" ISSNs;[17] it is based on the ISSN of the first published medium version of the publication. If the print and online versions of the publication are published at the same time, the ISSN of the print version is chosen as the basis of the ISSN-L. With ISSN-L is possible to designate one single ISSN for all those media versions of the title. The use of ISSN-L facilitates search, retrieval and delivery across all media versions for services like OpenURL, library catalogues, search engines or knowledge bases.[18] ROAD[edit]

ROAD: Directory of Open Access Scholarly Resources (it) (est. 2013), produced by the ISSN International Centre
ISSN International Centre
and Unesco[19]

See also[edit]

CODEN WorldCat
WorldCat
– an ISSN-resolve service

References[edit]

^ a b "What is an ISSN?". Paris: ISSN International Centre. Retrieved 13 July 2014.  ^ "Collection Metadata
Metadata
Standards". British Library. Retrieved 14 July 2014.  ^ "ISSN, a Standardised Code". Paris: ISSN International Centre. Retrieved 13 July 2014.  ^ "The ISSN for electronic media ISSN". www.issn.org. Retrieved 2017-09-28.  ^ "3". ISSN Manual (PDF). Paris: ISSN International Centre. January 2015. pp. 14, 16, 55–58.  HTML
HTML
version available at http://www.issn.org/understanding-the-issn/assignment-rules/issn-manual. ^ Example of database implementation where seven-digit integers are used to store ISSNs. ^ https://tools.ietf.org/html/rfc3044 ^ See p. ex. $pattern at source code (issn-resolver.php) of github.com/amsl-project/issn-resolver. ^ "Online ISSN Checker". Advanced Science Index. Retrieved 14 July 2014.  ^ "Online ISSN Validator". Journal Seeker. Retrieved 9 August 2014.  ^ "Total number of records in the ISSN Register" (PDF). ISSN International Centre. February 2017. Retrieved 23 February 2017.  ^ "ISSN for Electronic Serials". U.S. ISSN Center, Library of Congress. 19 February 2010. Retrieved 12 July 2014.  ^ a b "The ISSN-L for publications on multiple media". ISSN International Centre. Retrieved 12 July 2014.  ^ Rozenfeld, Slawek (January 2001). "Using The ISSN (International Serial Standard Number) as URN (Uniform Resource Names) within an ISSN-URN Namespace". IETF Tools. RFC 3044 . Retrieved 15 July 2014.  ^ Powell, Andy; Johnston, Pete; Campbell, Lorna; Barker, Phil (21 June 2006). "Guidelines for using resource identifiers in Dublin Core metadata § 4.5 ISSN". Dublin Core Architecture Wiki. Archived from the original on 13 May 2012.  ^ "MEDLINE®/PubMed® Data Element (Field) Descriptions". U.S. National Library of Medicine. 7 May 2014. Retrieved 19 July 2014.  ^ Kansalliskirjasto, Nationalbiblioteket, The National Library of Finland. "Kansalliskirjasto, Nationalbiblioteket, The National Library of Finland". nationallibrary.fi. CS1 maint: Multiple names: authors list (link) ^ "La nueva Norma ISSN facilita la vida de la comunidad de las publicaciones en serie", A. Roucolle. "Archived copy". Archived from the original on 10 December 2014. Retrieved 29 October 2014.  ^ "Road in a nutshell". Road.issn.org. Retrieved 12 September 2017. 

External links[edit]

Wikidata
Wikidata
has the property: ISSN (P236) (see talk; uses)

List of 63800 ISSN numbers and titles ISSN International Centre  "Cataloging Part", ISSN Manual (PDF), ISSN International Centre, archived from the original (PDF) on 7 August 2011 . How U.S. publishers can obtain an ISSN, United States: Library of Congress . ISSN in Canada, Library and Archives Canada . Getting an ISSN in the UK, British Library . Getting an ISSN in France (in French), Bibliothèque nationale de France  Getting an ISSN in Germany (in German), Deutsche Nationalbibliothek  Getting an ISSN in South Africa, National Library of South Africa 

v t e

International numbering standards

Standards

ISO 2108: International Standard Book
Book
Number (ISBN) ISO 3297: International Standard Serial Number
International Standard Serial Number
(ISSN) ISO 3901: International Standard Recording Code (ISRC) ISO 6166: International Securities Identification Number (ISIN) ISO/IEC 7812: Issuer identification number (IIN) ISO 10957: International Standard Music Number
International Standard Music Number
(ISMN) ISO 13616: International Bank Account Number
International Bank Account Number
(IBAN) ISO 15511: International Standard Identifier for Libraries... (ISIL) ISO 15706: International Standard Audiovisual Number
International Standard Audiovisual Number
(ISAN) ISO 15707: International Standard Musical Work Code (ISWC) ISO 17316: International Standard Link Identifier (ISLI) ISO 17442: Legal Entity Identifier (LEI) ISO 21047: International Standard Text Code (ISTC) ISO 26324: Digital Object Identifier System (DOI) ISO 27729: International Standard Name Identifier (ISNI) CAE/IPI Virtual International Authority File
File
(VIAF)

v t e

ISO standards by standard number

List of ISO standards / ISO romanizations / IEC standards

1–9999

1 2 3 4 5 6 7 9 16 31

-0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13

128 216 217 226 228 233 259 269 302 306 428 518 519 639

-1 -2 -3 -5 -6

646 690 732 764 843 898 965 1000 1004 1007 1073-1 1413 1538 1745 1989 2014 2015 2022 2047 2108 2145 2146 2240 2281 2709 2711 2788 2848 2852 3029 3103 3166

-1 -2 -3

3297 3307 3602 3864 3901 3977 4031 4157 4217 4909 5218 5428 5775 5776 5800 5964 6166 6344 6346 6385 6425 6429 6438 6523 6709 7001 7002 7098 7185 7200 7498 7736 7810 7811 7812 7813 7816 8000 8178 8217 8571 8583 8601 8632 8652 8691 8807 8820-5 8859

-1 -2 -3 -4 -5 -6 -7 -8 -8-I -9 -10 -11 -12 -13 -14 -15 -16

8879 9000/9001 9075 9126 9293 9241 9362 9407 9506 9529 9564 9594 9660 9897 9899 9945 9984 9985 9995

10000–19999

10005 10006 10007 10116 10118-3 10160 10161 10165 10179 10206 10218 10303

-11 -21 -22 -28 -238

10383 10487 10585 10589 10646 10664 10746 10861 10957 10962 10967 11073 11170 11179 11404 11544 11783 11784 11785 11801 11898 11940 (-2) 11941 11941 (TR) 11992 12006 12182 12207 12234-2 13211

-1 -2

13216 13250 13399 13406-2 13450 13485 13490 13567 13568 13584 13616 14000 14031 14224 14289 14396 14443 14496

-2 -3 -6 -10 -11 -12 -14 -17 -20

14644 14649 14651 14698 14750 14764 14882 14971 15022 15189 15288 15291 15292 15398 15408 15444

-3

15445 15438 15504 15511 15686 15693 15706

-2

15707 15897 15919 15924 15926 15926 WIP 15930 16023 16262 16612-2 16750 16949 (TS) 17024 17025 17100 17203 17369 17442 17799 18000 18004 18014 18245 18629 18916 19005 19011 19092 (-1 -2) 19114 19115 19125 19136 19439 19500 19501 19502 19503 19505 19506 19507 19508 19509 19510 19600 19752 19757 19770 19775-1 19794-5 19831

20000+

20000 20022 20121 20400 21000 21047 21500 21827:2002 22000 23270 23271 23360 24517 24613 24617 24707 25178 25964 26000 26300 26324 27000 series 27000 27001 27002 27006 27729 28000 29110 29148 29199-2 29500 30170 31000 32000 38500 40500 42010 55000 80000

-1 -2 -3

Category

Authority control

LCCN: sh85067450 GND: 4162599-7 BNF: cb11942988w (d

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