J. R. Resende et al., "Vibration propagation in discrete element particle models of rock", in 2014 ISRM European Rock Mechanics Symp. (EUROCK 2014): Proc., R . Alejano , Áurea Perucho , Claudio Olalla , and Rafael Jiménez, Ed., Vigo, Taylor & Francis, 2014, vol. 1, pp. 871-876