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- [8] THE COMPLEX FORM AND SOME BOUNDARY-VALUE-PROBLEMS FOR NON-LINEAR ELLIPTIC-SYSTEMS OF 2ND ORDER CHINESE ANNALS OF MATHEMATICS SERIES B, 1981, 2 (02): : 201 - 216
- [9] THE INITIAL-VALUE PROBLEMS AND NON-LINEAR BOUNDARY-VALUE-PROBLEMS FOR A CLASS OF THE 2ND ORDER QUASILINEAR PARABOLIC-SYSTEMS CHINESE ANNALS OF MATHEMATICS SERIES B, 1982, 3 (01): : 67 - 78