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Communications in Nonlinear Science and Numerical Simulation > 2017 > 44 > C > 167-183
Boletín de la Sociedad Matemática Mexicana > 2018 > 24 > 1 > 257-267
Communications in Nonlinear Science and Numerical Simulation > 2017 > 44 > C > 167-183
Boletín de la Sociedad Matemática Mexicana > 2018 > 24 > 1 > 257-267