IGBIDA, Noureddne, OUARO, Stanislas and TRADORE, Urbain. Mixed boundary condition for the Monge-Kantorovich equation. Topological Methods in Nonlinear Analysis. Online. 1 March 2016. Vol. 47, no. 1, pp. 109 - 123. [Accessed 22 July 2024]. DOI 10.12775/TMNA.2015.088.