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.
Andersen et al. (1998) "Low activity of superoxide dismutase and high activity of glutathione reductase in erythrocytes from centenarians." Age Ageing 27(5):643-648 (PubMed)