APPLIED PHYSICS LETTERS, vol. 74, no. 19, page. 2866 - 2868, 1999-05-10
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, vol. 17, no. 2, page. 497 - 499, 1999-03
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, vol. 16, no. 5, page. 2725 - 2728, 1998-09
IEEE TRANSACTIONS ON ELECTRON DEVICES, vol. 43, no. 4, page. 519 - 526, 1996-04