1. V. D. Golovin, ?Concerning a paper of V. Villani,? Ukr. Geometr. Sb., No. 13, 63?66 (1973).
2. L. B. Graifer, S. Ya. Gusman, and A. K. Knyazeva, ?Problems of classification of open complex manifolds,? Uch. Zap. Permsk. Gos. Univ., No. 218, 53?55 (1969).
3. M. G. Zaidenberg, ?On complex analytic Banach manifolds in connection with problems of operator theory,? Tr. Nauchno-Issled. Bist. Mat. Voronezh. Univ., No. 3, 35?43 (1971).
4. V. A. Krasnov, ?On the equivalence of embeddings of contractible complex spaces,? Izv. Akad. Nauk SSSR, Ser. Mat.,38, No. 5, 1012?1036 (1974).
5. V. A. Krasnov, ?Transitivity of exceptional subspaces,? Izv. Akad. Nauk SSSR, Ser. Mat.,39, No. 1, 15?22 (1975).