@article{article23d54fea,
title   = {Sn 'O IND.2' extended gate field-effect transistor as pH sensor},
author = {Batista, P. D. and Graeff, Carlos Frederico de Oliveira and Ramírez Fernandez, Francisco Javier and Marques, F. das C.},
year = {2006},
journal   = {Brazilian Journal of Physics}
}