@misc{miscb08819f1,
title   = {Xanthophylls protonated molecule and molecular ion in ESI-MS},
author = {Guaratini, Thais and Vessecchi, Ricardo and Pinto, Ernani and Colepicolo, Pio and Lopes, Norberto Peporine},
year = {2005},
booktitle   = {International Symposium on Carotenoids}
}