de Val-Borro, M., Bockelée-Morvan, D., Jehin, E., Hartogh, P., Opitom, C., Szutowicz, S., et al. (2014). Distant activity of comet C/2006 W3 (Christensen) as observed with Herschel. Talk presented at Asteroids, Comets, Meteors. Helsinki, Finland. 2014-06-30 - 2014-07-04.