SENSORS AND ACTUATORS B-CHEMICAL, vol. 124, no. 1, page. 143 - 146, 2007-06-10
SENSORS AND ACTUATORS B-CHEMICAL, vol. 122, no. 2, page. 365 - 368, 2007-03-26
APPLIED PHYSICS LETTERS, vol. 90, no. 11, 2007-03-12