TY  - RPRT
TI  - Are the circular, dark features on Comet Borrelly's surface albedo variations or pits?
AU  - R.M. Nelson
AU  - L.A. Soderblom
AU  - B.W. Hapke
PY  - 2004
DO  - 10.1016/j.icarus.2003.04.002
UR  - https://pubs.usgs.gov/publication/70027782
ID  - 70027782
ER  -