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.
Molofsky et al. (2003) "Bmi-1 dependence distinguishes neural stem cell self-renewal from progenitor proliferation." Nature 425(6961):962-967 (PubMed)