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- [2] ON SYMMETRIES AND 1ST INTEGRALS OF DYNAMICAL-SYSTEMS NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-BASIC TOPICS IN PHYSICS, 1982, 67 (02): : 223 - 232
- [3] SYMMETRY VECTORS AND 1ST INTEGRALS OF DYNAMICAL-SYSTEMS LETTERE AL NUOVO CIMENTO, 1981, 30 (07): : 206 - 208
- [4] SYMMETRIES, 1ST INTEGRALS AND SPLITTABILITY OF DYNAMICAL-SYSTEMS LETTERE AL NUOVO CIMENTO, 1978, 21 (07): : 253 - 257
- [5] 2 GLOBAL 1ST INTEGRALS OF CERTAIN DYNAMICAL-SYSTEMS LETTERE AL NUOVO CIMENTO, 1978, 21 (08): : 281 - 284
- [6] SYMMETRIES, 1ST INTEGRALS, AND DIFFERENTIAL FORMS OF DYNAMICAL-SYSTEMS HADRONIC JOURNAL, 1980, 3 (03): : 1059 - 1079
- [7] 1ST INTEGRALS INDEPENDENT OF THE HAMILTONIAN FOR SOME DYNAMICAL-SYSTEMS HADRONIC JOURNAL, 1983, 6 (03): : 813 - 831
- [8] NOTES ON CONNECTION BETWEEN SYMMETRIES AND 1ST INTEGRALS OF DYNAMICAL-SYSTEMS LETTERE AL NUOVO CIMENTO, 1977, 19 (10): : 366 - 368
- [10] ON A NEW 1ST INTEGRAL OF CERTAIN DYNAMICAL-SYSTEMS AND ITS APPLICATIONS TO RECENT RESULTS CONCERNING 1ST INTEGRALS OF NEWTONIAN SYSTEMS LETTERE AL NUOVO CIMENTO, 1980, 29 (09): : 310 - 314