@INPROCEEDINGS {1786,
author={H.  Ramos and A. L. Ribeiro and P.M. Girão},
doi={},
booktitle={Soft Magnetic Materials Conf.},
title={A Two Dimensional Vector Model of Ferromagnetic Hysteresis},
year={1993},
month={September},
volume={--},
pages={S6-16---} 
}