@inproceedings{inproceedingscda05b11,
title   = {An extension of the invariance principle for switched nonlinear systems},
author = {Valentino, Michele Cristina and Oliveira, Vilma Alves de and Alberto, Luís Fernando Costa and Sant'Anna, Douglas Azevedo},
year = {2011},
publisher = {IEEE},
booktitle   = {IEEE Conference on Decision and Control and European Control Conference (CDC-ECC)}
}