Cournède, P.-H. ., B. . Koobus, and A. . Dervieux. “Positivity Statements for a Mixed-Element-Volume Scheme on xed and Moving Grids”. European Journal of Computational Mechanics, vol. 15, no. 7-8, June 2006, pp. 767-98, https://journals.riverpublishers.com/index.php/EJCM/article/view/2045.