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HE, J.-H. (2006). SOME ASYMPTOTIC METHODS FOR STRONGLY NONLINEAR EQUATIONS. International Journal of Modern Physics B, 20(10), 1141-1199. https://doi.org/10.1142/s0217979206033796
HE JH. SOME ASYMPTOTIC METHODS FOR STRONGLY NONLINEAR EQUATIONS. International Journal of Modern Physics B. 2006;20(10):1141-99.