@article{TMF_1994_100_2_a7,
     author = {I. V. Tsvetkov},
     title = {Operator calculations in theory of path integrals},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {248--263},
     publisher = {mathdoc},
     volume = {100},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1994_100_2_a7/}
}