This can be the selection assigned to the short article with the publisher, and it is the one you will use to reference your posting in the library catalogues. ISSN code (also referred to as as "ISSN framework" or "ISSN syntax") might be expressed as follows: NNNN-NNNC Afterward, in 1991, https://www.directivepublications.org/journal-of-applied-nanoscience/