TY - RPRT TI - The Opposition Effect: Laboratory Studies Compared to Theoretical Models AU - Nelson, R. M. AU - Hapke, B. W. AU - Smythe, W. D. AU - Hale, A. S. AU - Piatek, J. L. PY - 2002 UR - https://ntrs.nasa.gov/citations/20020046342 ID - 20020046342 ER -