Cornell Chronicle - "Asteroids spin at YORP speed, thanks to the effects of sunlight, Cornell and Belfast astronomers discover" (Lauren Gold), 3/7/2007, Box: 54, Folder: 364. Arecibo Ionospheric Observatory records, 53-7-3581. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/285015 Accessed April 07, 2026.