REVIEW OF SCIENTIFIC INSTRUMENTS, vol. 66, no. 2, page. 2355 - 2357, 1995-02
PHYSICAL REVIEW E, vol. 50, no. 2, page. 1376 - 1382, 1994-08
REVIEW OF SCIENTIFIC INSTRUMENTS, vol. 66, no. 8, page. 4222 - 4226, 1995-08
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 27, no. 5, page. 522 - 527, 1994-10
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, vol. 347, no. 1-3, page. 52 - 55, 1994-08-11
AUSTRALIAN JOURNAL OF PHYSICS, vol. 48, no. 2, page. 321 - 331, 1995-01