@book{116331,
  author = {L Grishchuk and Yu Sidorov},
  title = {Squeezed quantum states in theory of cosmological perturbations, ed. by M.A. Markov, V.A. Berezin, and V.P. Frolov},
  year = {1991},
  month = {1991-01-01},
  publisher = { World Scientific , Singapore, },
  language = {en},
}