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.
Weichselbaum et al. (1988) "Some retinoblastomas, osteosarcomas, and soft tissue sarcomas may share a common etiology." Proc. Natl. Acad. Sci. U.S.A. 85(7):2106-2109 (PubMed)