PubMed's Single Citation Matcher, which allows you to find a complete citation, is availble from PubMed's homepage under PubMed Tools.
Fill out as much information as you have, and PubMed will return the records that match the information that you have provided.
The search above finds all articles published in 2007 that have Cervantes as an author and that have the word "carcinoma" in the title.