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- [9] MIXED BOUNDARY-VALUE-PROBLEMS FOR ELLIPTIC-EQUATIONS ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING, 1981, 6 (02): : 133 - 137
- [10] MIXED BOUNDARY-VALUE-PROBLEMS FOR A CERTAIN SYSTEM OF EQUATIONS DOKLADY AKADEMII NAUK SSSR, 1986, 286 (01): : 47 - 50