Soderblom, J.; Belliii, J.; Hubbard, M.; Wolff, M. (2006). "Martian phase function: Modeling the visible to near-infrared surface photometric function using HST-WFPC2 data". Icarus. 184 (2): 401–423. Bibcode:2006Icar..184..401S. doi:10.1016/j.icarus.2006.05.006.
Soderblom, J.; Belliii, J.; Hubbard, M.; Wolff, M. (2006). "Martian phase function: Modeling the visible to near-infrared surface photometric function using HST-WFPC2 data". Icarus. 184 (2): 401–423. Bibcode:2006Icar..184..401S. doi:10.1016/j.icarus.2006.05.006.