Knudstrup, E, Albrecht, S H, Gandolfi, D, Marcussen, M L, Goffo, E, Serrano, L M, Dai, F, Redfield, S, Hirano, T, Csizmadia, S, Cochran, W D, Deeg, H J, Fridlund, M, Lam, K W F, Livingston, J H, Luque, R, Narita, N, Palle, E, Persson, C M & Van Eylen, V 2023, ' The low density, hot Jupiter TOI-640 b is on a polar orbit ', Astronomy & Astrophysics . < http://adsabs.harvard.edu/abs/2023arXiv230201702K > Aarhus University