M. Balajia, M. Manivel Rajab, K.Asokan, D. Kanjilalc, T.R. Rajasekarana, D. Pathinettam Padiyana,
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms Volume 269, Issue 10, 15 May 2011, Pages 1088-1093 [database]