@article{article38c12083,
title   = {Heterodyne Z-scan measurements of slow absorbers},
author = {Guedes, Ilde and Misoguti, Lino and De Boni, Leonardo and Zílio, Sérgio Carlos},
year = {2007},
doi = {10.1063/1.2713936},
journal   = {Journal of Applied Physics}
}