Alonso-Llanes, L., Gustavo Sánchez-Colina, Etién Martínez, A. J. Batista-Leyva, R. Toussaint, & Ernesto Altshuler. "Intruder Penetration in Granular Matter Studied by Lock-In Accelerometry." Revista Cubana de Física [Online], 33.2 (2016): 95-97. Web. 2 May. 2024