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.
Zadik et al. (1985) "The influence of age on the 24-hour integrated concentration of growth hormone in normal individuals." J. Clin. Endocrinol. Metab. 60(3):513-516 (PubMed)