ArXiV 1501.02155, 2015.
@ARTICLE{hales-kepler, author = "Thomas C. Hales and Mark Adams and Gertrud Bauer and Dat Tat Dang and John Harrison and Truong Le Hoang and Cezary Kaliszyk and Victor Magron and Sean McLaughlin and Thang Tat Nguyen and Truong Quang Nguyen and Tobias Nipkow and Steven Obua and Joseph Pleso and Jason Rute and Alexey Solovyev and An Hoai Thi Ta and Trung Nam Tran and Diep Thi Trieu and Josef Urban and Ky Khac Vu and Roland Zumkeller", title = "A formal proof of the Kepler conjecture", journal = "arXiv" volume = "1501.02155", year = 2015}