Caiazzo, I, Burdge, KB, Tremblay, PE, Fuller, J, Ferrario, L, Gänsicke, BT, Hermes, JJ, Heyl, J, Kawka, A, Kulkarni, SR, Marsh, TR, Mróz, P, Prince, TA, Richer, HB, Rodriguez, AC, van Roestel, J, Vanderbosch, ZP, Vennes, S, Wickramasinghe, D, Dhillon, VS et al, Littlefair, SP, Munday, J, Pelisoli, I, Perley, D, Bellm, EC, Breedt, E, Brown, AJ, Dekany, R, Drake, A, Dyer, MJ, Graham, MJ, Green, MJ, Laher, RR, Kerry, P, Parsons, SG, Riddle, RL, Rusholme, B and Sahman, DI (2023) A rotating white dwarf shows different compositions on its opposite faces. Nature, 620 (7972). pp. 61-66. ISSN 0028-0836