@article{article33d1b988,
title   = {Effective electromechanical properties of 622 piezoelectric medium with unidirectional cylindrical holes},
author = {Aguiar, Adair Roberto and Bravo Castillero, Julián and Rodríguez Ramos, Reinaldo and Silva, Uziel Paulo da},
year = {2013},
doi = {10.1115/1.4023475},
journal   = {Journal of Applied Mechanics}
}