1. Saturn's E ring 1. CCD observations of March, 1980;Baum;Icarus,1981
2. No giant meteor crater in Wilkes Land, Antarctica;Bentley;Journal of Geophysical Research,1979
3. Possible source craters for the North American tektites—a geochronological investigation;Bottomley;EOS,1979
4. Systems of colliding bodies in a gravitational field: I Numerical simulation of the standard model;Brahic;Astronomy and Astrophysics,1977