TY  - RPRT
TI  - Comet and Asteroid Hazard to the Terrestrial Planets
AU  - Ipatov, S. I.
AU  - Mather, J. C.
AU  - Oegerle, William
PY  - 2002
UR  - https://ntrs.nasa.gov/citations/20020066739
ID  - 20020066739
ER  -