PT Journal AU Gershenzon, EM Gol'tsman, GN Multanovskii, VV Ptitsina, NG TI Cross section for binding of free carriers into excitons in germanium SO JETP Lett. JI JETP Lett. PY 1981 BP 574 VL 33 IS 11 DE Ge; excitons; photoconductivity ER