@article{DE_1975_11_5_a20,
     author = {T. V. Stepanova},
     title = {The estimation from below of orders of separation in the quasianalytic case},
     journal = {Differencialʹnye uravneni\^a},
     pages = {930--933},
     publisher = {mathdoc},
     volume = {11},
     number = {5},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_5_a20/}
}