Richer, M. G., Báez, S. h., & López, J. A. (2010). What Can We Learn About the Kinematics of Bright Extragalactic Planetary Nebulae?. Revista Mexicana De Astronomía Y Astrofísica, 45(2). Retrieved from https://revistas.unam.mx/index.php/revmexaa/article/view/20676