共 50 条
- [2] LOCAL CLASSIFICATION OF FIRST-ORDER NONLINEAR PARTIAL DIFFERENTIAL EQUATIONS DOKLADY AKADEMII NAUK SSSR, 1973, 210 (03): : 525 - 528
- [3] On Involutive Systems of First-order Nonlinear Partial Differential Equations COMPLEX ANALYSIS: SEVERAL COMPLEX VARIABLES AND CONNECTIONS WITH PDE THEORY AND GEOMETRY, 2010, : 25 - 50
- [6] PICONE IDENTITY FOR FOURTH ORDER DIFFERENTIAL EQUATIONS ATTI DELLA ACCADEMIA NAZIONALE DEI LINCEI RENDICONTI-CLASSE DI SCIENZE FISICHE-MATEMATICHE & NATURALI, 1972, 52 (04): : 455 - 456
- [10] Fractal First-Order Partial Differential Equations Archive for Rational Mechanics and Analysis, 2006, 182 : 299 - 331