TY - JOUR AU - Benedict, L AU - Shirley, Eric AU - Bohn, R C2 - Physical Review B (Condensed Matter and Materials Physics) DA - 1998-01-01 00:01:00 LA - en M1 - 57 PB - Physical Review B (Condensed Matter and Materials Physics) PY - 1998 TI - Theory of optical absorption in diamond, Si, Ge and GaAs ER -