B.B. Guzina, S. Nintcheu, and M. Bonnet (2002). “An elstodynamic BIE approach to underground cavity detection”, Electronic J. Bound. Elem., 2, 223-230.

B.B. Guzina, S. Nintcheu, and M. Bonnet (2002). “An elstodynamic BIE approach to underground cavity detection”, Electronic J. Bound. Elem., 2, 223-230.