共 50 条
- [1] ON THE SYMMETRIES OF SYSTEMS OF DIFFERENTIAL-EQUATIONS LETTERE AL NUOVO CIMENTO, 1981, 32 (13): : 353 - 360
- [2] SYMMETRIES AND DIFFERENTIAL-EQUATIONS JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1981, 14 (08): : 1893 - 1914
- [4] SYMMETRIES OF DIFFERENTIAL-EQUATIONS JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1986, 19 (10): : 1793 - 1800
- [6] REDUCTIONS OF SOME SYSTEMS OF DIFFERENTIAL-EQUATIONS, DETERMINED BY THEIR SYMMETRIES VESTNIK MOSKOVSKOGO UNIVERSITETA SERIYA 1 MATEMATIKA MEKHANIKA, 1987, (01): : 63 - 65
- [7] REDUCTION OF DIFFERENTIAL-EQUATIONS WITH SYMMETRIES MATHEMATICS OF THE USSR-IZVESTIYA, 1981, 17 (01): : 73 - 86