International Standard Serial Number

Article

May 19, 2022

The International Standard Serial Number (ISSN) is an eight-digit unique number used to identify printed or electronic periodicals. Journals published in both media can have two ISSN numbers, print ISSN (p-ISSN) and electronic ISSN (e-ISSN or eISSN). The ISSN system was established as an ISO international standard in 1971 and was published as ISO 3297 in 1975. The ISO subcommittee TC 46 / SC 9 is responsible for the standard.

Code format

The ISSN code format is an eight-digit number, divided by a dash into two four-digit numbers. The last digit, which can be 0-9 or X, is a check digit. For example, the ISSN journal Hearing Research is 0378-5955. The following algorithm is used to calculate the check digit: The sum of the first seven digits of the ISSN number multiplied by their position in the number is calculated, counting from the right, in other words 8, 7, 6, 5, 4, 3, and 2: 0 ⋅ 8 + 3 ⋅ 7 + 7 ⋅ 6 + 8 ⋅ 5 + 5 ⋅ 4 + 9 ⋅ 3 + 5 ⋅ 2 {\ displaystyle 0 \ cdot 8 + 3 \ cdot 7 + 7 \ cdot 6 + 8 \ cdot 5 + 5 \ cdot 4 + 9 \ cdot 3 + 5 \ cdot 2} 0 + 21 + 42 + 40 + 20 + 27 + 10 {\ displaystyle 0 + 21 + 42 + 40 + 20 + 27 + 10} 160 {\ displaystyle 160} . Then divide it by the module with 11 and determine the rest. 160 11 14 the rest 6 14 + 6 11 {\ displaystyle {\ frac {160} {11}} 14 {\ mbox {rest}} 6 14 + {\ frac {6} {11}}} .If there is no residue, the check digit is 0, otherwise the remainder is subtracted from 11 to get a check digit: 11 - 6 5 {\ displaystyle 11-6 5} The check digit is 5.X with a capital letter in the check digit denoting 10.

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