1. The Polke-Shwartz-Lopshitz problem in a multidimensional pseudo-Euclidean space;Bolshakov;DEP. No. 1928-76,1976
2. Investigation of solutions of one equation in operators in a pseudo-Euclidean space;Bolshakov;DEP. No. 1879-78,1978
3. On solutions of an operator equation in a pseudo-Euclidean space;Bolshakov,1979
4. A classification of eigensubspaces of a symmetric linear operator in a pseudo-Euclidean space;Reichstein,1979
5. Matrices and Indefinite Scalar Products;Gohberg,1983