%0 Journal Article %A S. L. Pyshkin %T On induced emission in helium phosphide %J Doklady Akademii Nauk %D 1974 %P 1345-1347 %V 219 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1974_219_6_a18/ %G ru %F DAN_1974_219_6_a18