@inproceedings{inproceedings665b77ba,
title   = {3D photoionization models and the abundance of Type I PNe},
author = {Gruenwald, Ruth Bomfim and Viegas, Sueli Maria Marino},
year = {1998},
publisher = {Instituto Nacional de Optica y Electronica},
booktitle   = {Reunión Regional Latinoamericana de Astronomia Unión Astronómica Internacional}
}