共 7 条
- [1] Colton D., 1980, ANAL THEORY PARTIAL
- [2] COLTON D, UNPUB INTEGRAL EQUAT
- [3] HIZAL A, 1980, ACOUSTIC ELECTROMAGN, P169
- [5] Muller C., 1980, MATH METHODS APPL SC, V2, P48
- [6] URSELL F, 1973, P CAMB PHILOS SOC, V74, P117
- [7] VEKUA IN, 1953, DOKL AKAD NAUK SSSR, V90, P715