@inproceedings{inproceedings182cec10,
title   = {Orbital angular momentum exchange in an optical parametric oscillator},
author = {Huguenin, J A O and Khoury, A Z and Martinelli, Marcelo and Nussenzveig, P},
year = {2005},
publisher = {Sociedade Brasileira de Física},
booktitle   = {Encontro Nacional de Física da Matéria Condensada}
}