@inproceedings{inproceedings897f9cad,
title   = {Planetary nebulae and determination of the bulge–disk boundary},
author = {Costa, Roberto Dell'Aglio Dias da and Cavichia, Oscar and Maciel, Walter Junqueira},
year = {2013},
doi = {10.1017/S1743921312021746},
publisher = {International Astronomical Union},
booktitle   = {IAU Symposium}
}