de Val-Borro, M., Hartogh, P., Crovisier, J., Bockelée- Morvan, D., Biver, N., Lis, D. C., et al. (2010). Water production in comet 81P/Wild 2 as determined by Herschel/HIFI. Astronomy and Astrophysics, 521: L50. doi:10.1051/0004-6361/201015161.