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.
Jimenez et al. (1999) "DNA-dependent protein kinase is not required for the p53-dependent response to DNA damage." Nature 400(6739):81-83 (PubMed)