%0 Journal Article %A A. A. Grib %A B. A. Levitskii %A V. M. Mostepanenko %T Particle creation from vacuum by a~nonstationary gravitational field in the canonical formalism %J Teoretičeskaâ i matematičeskaâ fizika %D 1974 %P 59-75 %V 19 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1974_19_1_a5/ %G ru %F TMF_1974_19_1_a5