@article{article5b5b2123,
title   = {Analytical formulae for electromechanical effective properties of 3-1 longitudinally porous piezoelectric materials},
author = {Bravo-Castillero, Julián and Rodríguez-Ramos, Reinaldo and Guinovart-Díaz, Raúl and Sabina, Federico J. and Aguiar, Adair Roberto and Silva, Uziel P. and Gómez-Muñoz, José Luis},
year = {2009},
journal   = {Acta Materialia}
}