%R 2012PDSS..182T %H Tholen, D.J. %T Pluto-Charon Mutual Events V3.1 %D 03/2012 %J NASA Planetary Data System, EAR-A-3-RDR-PCME-V3.1 %U http://pdsquery.jpl.nasa.gov/query?Identifier=EAR-A-3-RDR-PCME-V3.1&resclass=data.dataset %B Ground-based photometric observations of the 1985-1990 Pluto-Charon mutual events, observed from Palomar, Mauna Kea, and McDonald Observatories.