LibKey.io is a search tool that helps you access an article when searching by DOI or PMID.
DOI: Strings of numbers and letters that begin with "10." that are created by the International DOI Federation. They are unique identifiers attached to articles.
PMID: Strings of numbers that are created by the PubMed database which is run by the US National Library of Medicine and the National Institutes of Health. They are unique identifiers for articles from PubMed.
This kind of search is particularly useful when you've found a citation elsewhere (e.g., in a bibliography, email, or social media) and want to quickly access the full-text. If we don't currently subscribe to the article, you'll be given the option to request the article through our interlibrary loan service. This feature is also integrated into MulvaSearch under the entry box (see example) and in BrowZine in the top right corner.
BrowZine: