Boehnhardt, H. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society; Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society;
Kaeufl, H.-U., Bonev, T., Boehnhardt, H., Fernandez, Y. R., & Lisse, C. (2005). Pre-Impact Mid-IR and Optical Observations of Comet 9P/Tempel 1. Earth, Moon and Planets, 97, 331-339. doi:10.1007/s11038-006-9071-0.