1. S. Bochner andW. T. Martin, Several Complex Variables, Princeton Univ. Press, Princeton (1948).
2. G. I. Eskin, Boundary-Value Problems for Elliptic Pseudodifferential Equations [in Russian], Nauka, Moscow (1973).
3. L. S. Frank, “Spaces of grid functions,” Mat. Sb., 86, No. 2, 187–233 (1971).
4. L. Hörmander, The Analysis of Linear Partial Differential Operators, Springer-Verlag, Berlin etc. (1985).
5. S. Rempel and B.-W. Schulze, Index Theory of Elliptic Boundary Problems, Akademie-Verlag, Berlin (1982).