共 50 条
- [47] ON INTEGRALS OF COMBINATIONS OF SOLUTIONS OF 2ND-ORDER DIFFERENTIAL-EQUATIONS JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1986, 19 (17): : 3701 - 3703
- [49] PERIODIC-SOLUTIONS OF NONLINEAR DIFFERENTIAL-EQUATIONS INVOLVING THE METHOD OF SCALAR NONLINEARITIES ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK, 1988, 39 (01): : 105 - 117