The code has a fixed length of 19 characters and has the formYYYYJJJJJVVVVMPPPPA,where YYYY is the four-digit year of the reference and JJJJJ is a code indicating where the reference was published.
Код состоит ровно из 19 символов и имеет формуYYYYJJJJJVVVVMPPPPA ,где YYYY — 4 цифры года публикации, JJJJJ — код журнала/монографии/сборника.