P. Freire, F. Melo, J. Filho, R. Lima, and A. Teixeira. VIBRATIONAL SPECTROSCOPY, 45 (2, SI):
99-102(2007)Workshop on Foundations and Applications of Raman Spectroscopy, Ceara,
BRAZIL, SEP 24-26, 2006.
E. da Silva, J. Germano, J. Lino, C. de Carvalho, A. Natalense, and M. Lima. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM
INTERACTIONS WITH MATERIALS AND ATOMS, 143 (1-2):
140-148(1998)Workshop on Low Energy Positron and Positronium Physics, UNIV
NOTTINGHAM, NOTTINGHAM, ENGLAND, JUL 15-18, 1997.