共 50 条
- [22] ELLIPTICAL SYSTEMS OF 2ND ORDER PARTIAL DIFFERENTIAL EQUATIONS DOKLADY AKADEMII NAUK SSSR, 1957, 112 (06): : 983 - 986
- [24] LYAPUNOV INEQUALITIES AND BOUNDS ON SOLUTIONS OF CERTAIN 2ND ORDER EQUATIONS CANADIAN MATHEMATICAL BULLETIN-BULLETIN CANADIEN DE MATHEMATIQUES, 1974, 17 (04): : 499 - 504
- [26] LINEAR DIFFERENTIAL EQUATIONS OF THE 2ND ORDER WITH A LARGE PARAMETER JOURNAL OF THE SOCIETY FOR INDUSTRIAL AND APPLIED MATHEMATICS, 1959, 7 (03): : 306 - 310
- [27] SCHLICHT FUNCTIONS AND LINEAR DIFFERENTIAL EQUATIONS OF 2ND ORDER JOURNAL OF RATIONAL MECHANICS AND ANALYSIS, 1955, 4 (04): : 467 - 480
- [29] THE INDEX OF A CERTAIN OPERATOR IN A BOUNDARY PROBLEM FOR AN ELLIPTICAL SYSTEM OF 2ND ORDER LINEAR DIFFERENTIAL EQUATIONS DOKLADY AKADEMII NAUK SSSR, 1956, 111 (02): : 287 - 290