Sometimes you will need to search for the article on the journal home page. See: Why did I go to the journal home page? Other times, the article may be missing.
Possible reasons why the article is missing:
In either case, please fill out a FindIt (SFX) Problem Report form by clicking on the "Contact Us" link on the SFX menu. Include your name and contact information in the form if you would like to receive a response about your problem.