ECS SOLID STATE LETTERS, vol. 4, no. 7, page. Q25 - Q28, 2015-01
ECS SOLID STATE LETTERS, vol. 3, no. 10, page. P120 - P122, 2014-01
ECS SOLID STATE LETTERS, vol. 3, no. 11, page. P136 - P139, 2014-01
ECS SOLID STATE LETTERS, vol. 1, no. 5, page. Q35 - Q38, 2012-08
ECS SOLID STATE LETTERS, vol. 3, no. 10, page. P117 - P119, 2014-01