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Comment on “Classification of Lie point symmetries for quadratic Liénard
” [J. Math. Phys. 54, 053506 (2013)] and its erratum
[J. Math. Phys. 55, 059901 (2014)]
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We demonstrate a simplification of some recent works on the classification of the
symmetries for a quadratic equation of Liénard type.
We observe that the problem could have been resolved more simply.
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