@inproceedings{inproceedings0731f403,
title   = {Chemical abundances of planetary nebulae in the disk-bulge connection},
author = {Costa, Roberto Dell'Aglio Dias da and Cavichia, Oscar and Maciel, Walter Junqueira},
year = {2009},
publisher = {Cambridge University Press},
booktitle   = {IAU Simposium}
}