O'Rourke, L., Küppers, M., Jorda, L., Bockelee-Morvan, D., Groussin, O., Müller, T., et al. (2012). Herschel observations of the Rosetta target 67P/Churyumov-Gerasimenko and deep impact/stardust/stardust NEXt target 9P/Tempel-1.