@article{article69217262,
title   = {Determination of the minimum concentrations of ferrofluid of 'CO''FE IND.2''O IND.4' to orient liquid crystals},
author = {Matuo, C Y and Tourinho, F A and Figueiredo Neto, Antônio Martins},
year = {1993},
journal   = {Journal of Magnetism and Magnetic Materials}
}