@article{RM_1977_32_5_a6,
     author = {M. A. Antonets},
     title = {The classical limit of solutions of the {Cauchy} problem for hypoelliptic {Weyl} symbols},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {32},
     number = {5},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1977_32_5_a6/}
}