@article{article3251e96c,
title   = {Quantum spin tunneling of magnetization in small ferromagnetic particles},
author = {Galetti, Diogenes and Pimentel, B M and Lima, Celso Luiz and Silva, E C},
year = {2009},
doi = {10.1016/j.physa.2008.12.044},
journal   = {Physica A: Statistical Mechanics and its Applications}
}