Kissel, Jochen Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society;
A'Hearn, M. F., Feaga, L. M., Keller, H. U., Kawakita, H., Hampton, D. L., Kissel, J., et al. (2012). Cometary Volatiles and the Origin of Comets. Astrophysical Journal, 758(1): 29. doi:10.1088/0004-637X/758/1/29.