@misc{miscacaa9991,
title   = {Noncollinear magnetism and the Hubbard model: an exact numerical treatment},
author = {Silva, M. F. and Capelle, Klaus and Oliveira, Luiz Nunes de},
year = {2001},
doi = {10.1016/S0304-8853(00)01191-4},
booktitle   = {International Conference on Magnestism}
}