1. Multiple fall of Pribram meteorites photographed;Ceplecha;Bull. Astron. Inst. Czechoslovakia,1961
2. A comparative structural and petrographic study of probable Canadian meteorite craters;Dence;Meteoritics,1964
3. The latitude variation of the meteor shower influx;Kresak;Bull. Astron. Inst. Czechoslovakia,1964
4. Orbital elements of photographic meteors;McCrosky;Smithsonian Contr. to Astrophys.,1961
5. Collision probabilities with the planets and the distribution of interplanetary matter;Öpik;Proc. Roy. Irish Acad.,1951