1. Methods of Celestial Mechanics;Brouwer,1961
2. An explanation of the light curve of Iapetus;Cook;Icarus,1970
3. Visual and Photographic Studies of the Planets at the Pic du Midi;Dollfus,1961
4. Velocity distribution of sporadic photographic meteors;Erickson;J. Geophys. Res.,1968
5. Lunar crater counts V: Latitude dependence and sources of impacting bodies;Hartmann;Commun. Lunar Planet. Lab.,1968