Comment on “Classification of Lie point symmetries for quadratic Liénard type equation ẍ+f(x)ẋ2+g(x)=0” [J. Math. Phys. 54, 053506 (2013)] and its erratum [J. Math. Phys. 55, 059901 (2014)]
2013 ◽
Vol 54
(5)
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pp. 053506
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2009 ◽
Vol 50
(10)
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pp. 102701
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2009 ◽
Vol 50
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pp. 082702
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2013 ◽
Vol 18
(5)
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pp. 708-716
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