@article{RM_1969_24_1_a16,
     author = {E. V. Radkevich},
     title = {A~Schauder type estimate for a~certain class of pseudo-differential operators},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {24},
     number = {1},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1969_24_1_a16/}
}