Kuiper, Gerard P. (1950). “The Diameter of Pluto”. Publications of the Astronomical Society of the Pacific62 (366): 133–137. Bibcode: 1950PASP...62..133K. doi:10.1086/126255.
Kuiper, Gerard P. (1950). “The Diameter of Pluto”. Publications of the Astronomical Society of the Pacific62 (366): 133–137. Bibcode: 1950PASP...62..133K. doi:10.1086/126255.