@article{TMF_1991_89_3_a12,
     author = {R. O. Grigor'ev},
     title = {Quantization of systems in incomplete spaces and the problem of particle production by a~gravitational field},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {473--480},
     year = {1991},
     volume = {89},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1991_89_3_a12/}
}