Cournède, Paul-Henry, Bruno Koobus, and Alain Dervieux. 2006. “Positivity Statements for a Mixed-Element-Volume Scheme on xed and Moving Grids”. European Journal of Computational Mechanics 15 (7-8):767-98. https://journals.riverpublishers.com/index.php/EJCM/article/view/2045.