PT Journal AU Gershenzon, EM Gol'tsman, GN Mel'nikov, AP TI Binding energy of a carrier with a neutral impurity atom in germanium and in silicon SO JETP Lett. JI JETP Lett. PY 1971 BP 185 EP 186 VL 14 IS 5 DE Ge; Si; neutral impurity atom; binding energy ER