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Guthrie G A 1994 Proc. R. Soc. London, Ser. A 446 107
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Guthrie G A and Hickman M S 1993 J. Math. Phys. 34 193
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[11] |
Krasilshchik I S and Vinogradov A M 1984 Acta Appl. Math. 2 79
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[12] |
Bluman G W and Cheviakov A F 2005 J. Math. Phys. 46 123506
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[13] |
Bluman G W and Kumei S 1989 Symmetries and Differential Equations (New York: Springer-Verlag)
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[14] |
Lou S Y, Hu X R and Chen Y 2012 J. Phys. A: Math. Theor. 45 155209
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[15] |
Hu X R, Lou S Y and Chen Y 2012 Phys. Rev. E 85 056607
|
[16] |
Lie S 1881 Arch. Math. 6 328
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[17] |
Ovsiannikov L V 1982 Group Analysis of Differential Equations (New York: Academic)
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[18] |
Olver P J 1986 Applications of Lie Groups to Differential Equations (Berlin: Springer)
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[19] |
Ibragimov N H 1985 Transformation Groups Applied to Mathematical Physics (Boston, MA: Reidel)
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[20] |
Chen Y and Dong Z Z 2009 Nonlinear Anal. 71 e810
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[21] |
Hu X R, Chen Y and Huang F 2010 Chin. Phys. B 19 080203
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[22] |
Dong Z Z, Chen Y and Lang Y H 2010 Chin. Phys. B 19 090205
|
[23] |
Dong Z Z, Chen Y, Kong D X and Wang Z G 2012 Chin. Ann. Math. Ser. B 33 309
|
[24] |
Hu X R, Chen Y and Huang F 2010 Chin. Phys. B 19 080203
|
[25] |
Zhang H P, Li B and Chen Y 2010 Chin. Phys. B 19 060302
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[26] |
Nucci M C 1989 J. Phys. A: Math. Gen. 22 2897
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