Authors: Kepler, SO Mukadam, A Winget, DE Nather, RE Metcalfe, TS Reed, MD Kawaler, SD Bradley, PA

Citation: So. Kepler et al., Evolutionary timescale of the pulsating white dwarf G117-B15A: The most stable optical clock known, ASTROPHYS J, 534(2), 2000, pp. L185-L188