Orfi , Ajmia Younes and Yakoubi , Driss. (2018). A Priori Error Analysis of an Euler Implicit, Finite Element Approximation of the Unsteady Darcy Problem in an Axisymmetric Domain.
Advances in Applied Mathematics and Mechanics. 10 (2).
301-321.
doi:10.4208/aamm.OA-2016-0055