@article{article26ebf61f,
title   = {Planetary nebulae and the chemical evolution of the Magellanic Clouds},
author = {Maciel, Walter Junqueira and Costa, Roberto Dell'Aglio Dias da and Idiart, Thais Eunice Pires},
year = {2009},
journal   = {Revista Mexicana de Astronomía y Astrofísica}
}