SENSORS AND ACTUATORS B-CHEMICAL, vol. 80, no. 1, page. 21 - 27, 2001-11-01
JOURNAL OF ELECTROCERAMICS, vol. 13, no. 1-3, page. 707 - 713, 2004-07
SENSORS AND ACTUATORS B-CHEMICAL, vol. 87, no. 3, page. 464 - 470, 2002-12-20