SHAH, K.; SINGH, T. AN APPROXIMATE SOLUTION OF θ-BASED RICHARDS’ EQUATION BY COMBINATION OF NEW INTEGRAL TRANSFORM AND HOMOTOPY PERTURBATION METHOD. Journal of the Nigerian Mathematical Society, [S. l.], v. 36, n. 1, p. 85–100, 2017. Disponível em: https://ojs.ictp.it/jnms/index.php/jnms/article/view/89. Acesso em: 25 apr. 2024.