L. Ambrosio, V. Caselles, S. Masnou, J. M. Morel: Connected Components of Sets of Finite Perimeter and Applications to Image Processing Journal of EMS. N. 3, p. 213-266, 2001 J. M. Morel, F. Santambrogio: Comparison of distances between measures Appl. Math. Lett. Vol. 20, N. 4, p. 427-432, 2007 J. M. Morel, F. Santambrogio: The regularity of optimal irrigation patterns Arch. Ration. Mech. Anal. (Accepted Paper) 2008 G. Buttazzo, A. Chen, J. Darbon, J. M. Morel, F. Santambrogio: On the equations of landscape formation Interfaces Free Bound. Vol. 16, N. 1, p. 105-136, 2014