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"Coefficients perturbation methods for higher-order differential equations."
M. K. El Daou, N. S. Al Mutawa (2009)
- M. K. El Daou, N. S. Al Mutawa:
Coefficients perturbation methods for higher-order differential equations. Int. J. Comput. Math. 86(8): 1453-1472 (2009)
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