@article{TMF_1983_56_1_a9,
     author = {V. L. Bakhrakh and S. I. Vetchinkin and I. M. Umanskii},
     title = {Quasiclassical {Green's} functions},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {103--113},
     year = {1983},
     volume = {56},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1983_56_1_a9/}
}