1. A. P. Kopylov, ?Boundary values of mappings close to an isometric mapping,? Sib. mat. Zh.,25, No. 3, 120?131 (1984).
2. A. V. Pogorelov, Extrinsic Geometry of Convex Surfaces, Amer. Math. Soc., Providence (1973).
3. V. A. Aleksandrov, ?Isometry of domains inR n and relative isometry of their boundaries. II,? Sib. Mat. Zh.,26, No. 6, 3?8 (1985).
4. V. A. Aleksandrov, ?Isometry of domains inR n and relative isometry of their boundaries. I,? Sib. Mat. Zh.,25, No. 3, 3?13 (1984).
5. V. A. Aleksandrov, ?Uniqueness of domains with non-Jordan boundaries,? Sib. Mat. Zh.,30, No. 1, 3?12 (1989).