@article{TRSPY_1974_131_a2,
     author = {Ya. S. Bugrov},
     title = {A constructive characterization of classes of functions with a dominating mixed derivative},
     journal = {Informatics and Automation},
     pages = {25--32},
     publisher = {mathdoc},
     volume = {131},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1974_131_a2/}
}