@article{articlea652b8d6,
title   = {The populations of planetary nebulae in the direction of the galactic burge: Chemical abundances and Wolf-Rayet central stars},
author = {Górny, S K and Stasinska, G and Escudero, André Vieira and Costa, Roberto Dell'Aglio Dias da},
year = {2004},
journal   = {Astronomy and Astrophysics}
}