On bifurcation of limit cycles from centers
1990 ◽
pp. 20-43
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2012 ◽
Vol 45
(6)
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pp. 772-794
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2013 ◽
Vol 23
(10)
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pp. 1350172
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2018 ◽
Vol 265
(10)
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pp. 4965-4992
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Keyword(s):
2013 ◽
Vol 23
(08)
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pp. 1350137
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2015 ◽
Vol 25
(05)
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pp. 1550066
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