Moreno, E., 		Hernández, M., 		Calas, H., 		Figueredo, J., 		Durruthy-Rodríguez, M. D., 		Leija, L., 		Rubio, B., AND 		López de Ipiña, J..
"Use of Impact Echo Method in Restoration in Old Havana" <em>Revista Cubana de Física</em> [Online], Volume 29 Number 1 (14 June 2012)