You can also search for periodicals by DOI or by PubMed ID (PMID) numbers
- DOI: A digital object identifier (DOI) is a unique alphanumeric string assigned by a registration agency (the International DOI Foundation) to identify content and provide a persistent link to its location on the Internet. The publisher assigns a DOI when your article is published and made available electronically.
- PMID number: the unique identifier number used in PubMed. They are assigned to each article record when it enters the PubMed system, so an in press publication will not have one unless it is issued as an electronic pre-pub. The PMID# is always found at the end of a PubMed citation.
If you cannot find the DOI or the PMID, don't worry, you can also search by periodical title (see above)