Gubajdullin, D., Mazurov, P., & Tsepaev, A. (2005). An algorithm for solving the stationary flow equation with fine grid segments in a confined-unconfined aquifer. Numerical Methods and Programming (Vychislitel’nye Metody I Programmirovanie), 6(6), 217–225. Retrieved from https://en.num-meth.ru/index.php/journal/article/view/164