Coronado, M., J. Ramírez-Sabag, and O. Valdiviezo-Mijangos. “On the Boundary Conditions in Tracer Transport Models for Fractured Porous Underground Formations”. Revista Mexicana De Física, vol. 53, no. 4, Jan. 2007, pp. 260-0, https://rmf.smf.mx/ojs/index.php/rmf/article/view/3543.