JOURNAL OF MICROMECHANICS AND MICROENGINEERING, vol. 19, no. 9, 2009-09
JOURNAL OF MICROMECHANICS AND MICROENGINEERING, vol. 18, no. 10, page. 105016 - 105016, 2008-10
APPLIED PHYSICS LETTERS, vol. 91, no. 1, 2007-07-02