Panchromatic Hubble Andromeda Treasury. IX. A Photometric Survey of Planetary Nebulae in M31DOI: info:10.1088/0004-637X/792/2/121v. 792121
Veyette, Mark J., Williams, Benjamin F., Dalcanton, Julianne J., Balick, Bruce, Caldwell, Nelson, Fouesneau, Morgan, Girardi, Léo, Gordon, Karl D., Kalirai, Jason, Rosenfield, Philip, and Seth, Anil C. 2014. "Panchromatic Hubble Andromeda Treasury. IX. A Photometric Survey of Planetary Nebulae in M31." The Astrophysical Journal, 792 121. https://doi.org/10.1088/0004-637X/792/2/121.