This is actually the amount assigned to your post by the publisher, and it is the 1 you can use to reference your article throughout the library catalogues. ISSN code (also referred to as as "ISSN construction" or "ISSN syntax") could be expressed as follows: NNNN-NNNC Indium-totally free MgSnO3 clear https://www.directivepublications.org/journal-of-applied-nanoscience/