OPTICS LETTERS, vol. 38, no. 21, page. 4429 - 4432, 2013-11-01
OPTICS LETTERS, vol. 36, no. 21, page. 4167 - 4169, 2011-11-01
OPTICS LETTERS, vol. 39, no. 13, page. 3915 - 3918, 2014-07-01
OPTICS LETTERS, vol. 32, no. 6, page. 623 - 625, 2007-03-15