1. M. A. [Russian text ignoured] 31, [Russian text ignoured] 1, 43–75 (1952).
2. M. A. [Russian text ignoured] 53, [Russian text ignoured] 1, 53–72 (1961).
3. M. A. [Russian text ignoured] 1963, 108–137, 1965.
4. Geometry of submanifolds, New York 1973.