Rodríguez-Castellanos, A., Avila-Carrera, R., & Sánchez-Sesma, F. (2007). Scattering of elastic waves by shallow elliptical cracks. Revista Mexicana De Física, 53(4), 254–0. Retrieved from https://rmf.smf.mx/ojs/index.php/rmf/article/view/3542