Pedro, J. O. <br/><br/>
Structural analysis including deformability of foundations -by finite elements / J.O. Pedro, J. M. Castel Branco Falca-o , L. R. Sousa. 

 - Lisboa, Portugal : Laboratorio Nacional de Engenharia Civil 
 - [12] p. 
 - Memoria; No.416 / Laboratorio Nacional de Engenharia Civil .