1. Postflight optical evaluation of the right-hand and left-hand windows of Gemini missions 4, 5, 6 and 7;Bonner;NASA Tech. Note No. D-4916,1968
2. Model distribution of photographic meteors;Dohnanyi;Bellcomm, Inc: Tech. Rep. No. 66-340-1,1966
3. Spray ejected from the lunar surface by meteoroid impact;Gault;NASA Tech. Note No. D-1767,1963
4. The Ariel II micrometeorite penetration measurements;Jennison,1967
5. Direct measurements of interplanetary dust particles in the vicinity of the Earth;McCracken;NASA Tech. Note No. D-1174,1961