NORMAL MODES FOR NONLINEAR HAMILTONIAN SYSTEMS

[1] BERGER MS, 1972, ORDINARY DIFFERENTIA

[2] AN INDEX OF FIXED POINT TYPE FOR PERIODIC ORBITS [J]. AMERICAN JOURNAL OF MATHEMATICS, 1967, 89 (01) : 133 - &

[3] Ganea T., 1967, CAHIERS TOPOLOGIE GE, V9, P181

[4] THEOREM ON EXISTENCE OF PERIODIC SOLUTIONS TO HAMILTONIAN SYSTEMS WITH CONVEX POTENTIAL [J]. JOURNAL OF DIFFERENTIAL EQUATIONS, 1971, 10 (02) : 324 - &

[5] HIRZEBRUCH F, 1968, MANNIGFALTIGKEITEN E, V57

[6] Horn J., 1903, Z MATH PHYS, V48, P400

[7] KRASNOSELSKII MA, 1955, DOKL AKAD NAUK SSSR+, V103, P961

[8] LIAPOUNOV MA, PROBLEME GENERAL STA

[9] Lusternik L., 1934, METHODES TOPOLOGIQUE

[10] Meyer K.R., 1971, CELESTIAL MECH, V4, P99, DOI [DOI 10.1007/BF01230325, 10.1007/BF01230325]

[1] BERGER MS, 1972, ORDINARY DIFFERENTIA

[2] AN INDEX OF FIXED POINT TYPE FOR PERIODIC ORBITS [J]. AMERICAN JOURNAL OF MATHEMATICS, 1967, 89 (01) : 133 - &

[3] Ganea T., 1967, CAHIERS TOPOLOGIE GE, V9, P181

[4] THEOREM ON EXISTENCE OF PERIODIC SOLUTIONS TO HAMILTONIAN SYSTEMS WITH CONVEX POTENTIAL [J]. JOURNAL OF DIFFERENTIAL EQUATIONS, 1971, 10 (02) : 324 - &

[5] HIRZEBRUCH F, 1968, MANNIGFALTIGKEITEN E, V57

[6] Horn J., 1903, Z MATH PHYS, V48, P400

[7] KRASNOSELSKII MA, 1955, DOKL AKAD NAUK SSSR+, V103, P961

[8] LIAPOUNOV MA, PROBLEME GENERAL STA

[9] Lusternik L., 1934, METHODES TOPOLOGIQUE

[10] Meyer K.R., 1971, CELESTIAL MECH, V4, P99, DOI [DOI 10.1007/BF01230325, 10.1007/BF01230325]