Collection search - Unbegaun, B.O. "Le conte de Bova Korolevic et le vocabulaire russe", Ts., 1955, 4 pp.; "Russe et slavon dans la terminologie juridique", Ts., 1957, 7 pp.; "Russian rammars before LOMONOSOV", Ts., A., 1958, 18 pp.; "Russian Surnames Derived from Aphetic Baptismal Names", Ts., 1967, 3 pp