Stimulated emission on transitions between excited states and ground state of an acceptor impurity in germanium

@inproceedings{Muravev1990StimulatedEO,
  title={Stimulated emission on transitions between excited states and ground state of an acceptor impurity in germanium},
  author={Array V Murav'ev and Sergei G. Pavlov and V. N. Pastin},
  year={1990}
}