Accessing scientific articles on the web
For nearly all scientific articles, abstracts are available at no charge. Some publishers have a policy of charging a fee for all articles, some will charge for recent articles but make older ones available at no cost.
A partial list of sources
- PubMed (http://www.ncbi.nlm.nih.gov/PubMed/), a service of the National Library of Medicine, includes over 14 million citations for biomedical articles back to the 1950's.
- PubMed Central (PMC) (www.pubmedcentral.nih.gov/) is the U.S. National Library of Medicine's digital archive of life sciences journal literature. Access to PMC is free and unrestricted.
- BioMed Central (http://www.biomedcentral.com) offers free access to some articles and to others on a subscription basis.
- Elsevier (http://www.elsevier.nl/) says that they are "A world leading, multiple-media publisher of scientific, technical and health information products and services, with 7,000 employees in 99 locations around the globe." For some articles a paid subscription is required.
- Sciencedirect (http://www.sciencedirect.com/) is "an information source for scientific, technical, and medical research. Subscription required for some products."
- Many times an article can be found using a search engine such as Google (http://www.google.com) and searching for as much information as is known. For example the exact title, a partial title and author, or the author, date and a keyword, for example Crohn's or paratuberculosis.