NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, vol. 437, no. 2-3, page. 516 - 520, 1999-11-21
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, vol. 91, no. 1, page. 53 - 57, 2008-04