..


, (. 17.X. 1906) - . 1942. (1940). . 1930. . . . . . .: , ., 1950, 2 ., ., 1954; . , ., 1957; , .: 1953-1954, ., 1956, . 11-70; , , 1956, 3, . 174-182; , , 1957, 8, . 188-196.

(: , )
..

(c)