Keller, H. U. Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society; MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Richter, K., Combi, J. R., Keller, H. U., & Meier, R. R. (2000). Multiple Scattering of Hydrogen Lyman alpha Radiation in the Coma of Comet Hyakutake (C/1996B2). Astrophysical Journal, 531, 599-611.