Approximate First Integrals of a Hamiltonian System with Two-Degrees of Freedom
1996 ◽
Vol 187
(4)
◽
pp. 495-524
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1969 ◽
Vol 33
(3)
◽
pp. 550-557
◽
1977 ◽
Vol 41
(1)
◽
pp. 20-28
◽
1988 ◽
Vol 52
(3)
◽
pp. 283-289
2004 ◽
Vol 11
(sup1)
◽
pp. 122-129
1988 ◽
Vol 31
(2)
◽
pp. 407-421
◽