%B New Developments in Boundary Element Methods %T Dynamic stiffnesses of foundations %D 1980 %C Southampton %A Enrique Alarcón Álvarez %A José Dominguez Abascal %A F. del Caño %X A general theory that described the B.I.E.M. in steady-state elastodynamics is developed. A comprehensive formulation for homogeneous and heterogeneous media is presented and also some results in practical cases as well as a general review of several other possibilities. %I CML Publications %L upm22522