Dj. Thompson et al., SUPPLEMENT TO THE 2ND EGRET CATALOG OF HIGH-ENERGY GAMMA-RAY SOURCES, The Astrophysical journal. Supplement series, 107(1), 1996, pp. 227-237
This supplement extends the second EGRET catalog of high-energy gamma-
ray sources (see recent paper by Thompson et al.), incorporating data
from 1993 September to 1994 October. The second catalog contained 129
sources, based on data from 1991 April to 1993 September. An additiona
l 28 sources are found, including three new identifications of active
galactic nuclei.