@article{articledb893e64,
title   = {Study of the Doppler broadening of positron annihilation radiation in silicon},
author = {Nascimento, E do and Helene, Otaviano Augusto Marcondes and Vanin, Vito Roberto and Moralles, M},
year = {2005},
doi = {10.1590/s0103-97332005000500016},
journal   = {Brazilian Journal of Physics}
}