ISSN

Introduction to ISSN - An ISSN is an eight-digit serial number used to identify a serial publication. - It helps distinguish between serials with the same title. - ISSNs are used in ordering, cataloging, and interlibrary loans. - The ISSN system was first drafted as an ISO standard in 1971. - ISO subcommittee TC 46/SC 9 is responsible for maintaining the standard. Code Format and Assignment - An ISSN is an eight-digit code divided by a hyphen into two four-digit numbers. - The last digit is a check digit, uniquely representing the ISSN. - The ISSN can be expressed as 'NNNN-NNNC' or using a regular expression. - The check digit is calculated using a specific algorithm. - The check digit can be a digit from 0 to 9 or an uppercase X. - ISSN codes are assigned by ISSN National Centres. - The ISSN International Centre in Paris coordinates the network of National Centres. - The International Centre is an intergovernmental organization. Linking ISSN - ISSN-L is a unique identifier for different media versions of the same serial. - It facilitates collocation and linking among various media versions. - ISSN-L is based on the ISSN of the first published medium version. - It does not change the use or assignment of ordinary ISSNs. - ISSN-L is useful for search, retrieval, and delivery across all media versions. Comparison with Other Identifiers - ISSN and ISBN codes serve similar purposes. - ISBNs are assigned to individual books, while ISSN is for serials. - An ISSN is anonymous and does not provide publisher or location information. - ISSN is assigned each time a serial undergoes a major title change. - Extensions like PII and SICI allow references to specific components of a serial. Problems and Additional Resources - ISSN is not unique when the concept is a journal with multiple contents and copyrights. - The U.S. National Library of Medicine created the NLM Unique ID (JID) to address this issue. - ISSN does not offer resolution mechanisms like DOI or URN. - DOI is often used as a URN for articles. - There is no ISSN online service to resolve the ISSN of a journal. - CODEN is another identification system used for scientific and technical publications. - WorldCat is an ISSN-resolve service that helps in locating publications. - There are various references and resources available for further information on ISSN. - These resources provide guidance on using ISSN as URN and metadata standards. - The ISSN International Centre and Library of Congress provide information on obtaining ISSN. Note: The content about URNs, media category labels, and ROAD could not be included in the groups as they do not have identical concepts with other parts of the content.