at senescence.info
You can search for any reference by title, author, date, editor, journal and publisher. Searching is case insensitive, and allows for only partial terms (e.g. seq with pickup both RNA-Seq and sequencing) matching. You can also use advanced queries that are detailed here.
Momand et al. (1992) "The mdm-2 oncogene product forms a complex with the p53 protein and inhibits p53-mediated transactivation." Cell 69(7):1237-1245 (PubMed)