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.
Cheng et al. (2000) "Hematopoietic stem cell quiescence maintained by p21cip1/waf1." Science 287(5459):1804-1808 (PubMed)