Alarcón Álvarez, Enrique and Dominguez Abascal, José
(1980).
Impedance of foundations using the Boundary Integral Equation Method.
In: "2nd. International Symposium on Innovative Numerical Analysis in Applied Engineering Sciences", 16/06/1980-20/06/1980, Montreal (Canadá). ISBN 0-8139-0867-1.