NORMAL FORM PERTURBATION ANALYSIS OF NON-AUTONOMOUS OSCILLATORY SYSTEMS
1987 ◽
Vol 87
(11)
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pp. 6538-6543
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1988 ◽
Vol 89
(9)
◽
pp. 5715-5720
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2002 ◽
Vol 66
(6)
◽
pp. 881-887
◽
1969 ◽
Vol 27
◽
pp. 6-7
Keyword(s):
2012 ◽
Vol 132
(8)
◽
pp. 698-699
◽
Keyword(s):