Design of cascade artificial neural networks optimized with the memetic computing paradigm for solving the nonlinear Bratu systemAisarul Hassan, Siraj-ul-Islam Ahmad, Muhammad Kamran, Ahsan Illahi and Raja Muhammad Asif ZahoorEur. Phys. J. Plus, 134 3 (2019) 122DOI: https://doi.org/10.1140/epjp/i2019-12530-5