共 50 条
- [36] NEW BOUNDARY-VALUE PROBLEMS FOR HYPERBOLIC OPERATORS COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES SERIE A, 1974, 278 (21): : 1345 - 1349
- [38] COERCIVE BOUNDARY-VALUE PROBLEMS FOR DIFFERENCE OPERATORS DOKLADY AKADEMII NAUK SSSR, 1970, 192 (01): : 42 - &