1. Alexander , W. M. J. L. Bohn Zodiacal dust measurements in cislunar and interplanetary space from OGO III and Mariner IV experiments between June and December 1966 1967
2. Review of direct measurements of interplanetary dust from satellites and probes;Alexander;Space Res.,1963
3. Clifton , S. R. J. Naumann Pegasus satellite measurements of meteoroid penetration (Feb. 16-Dec. 31, 1965), NASA Tech. Mem. NASA TM X- 1316 1966
4. Review of meteorold environment based on results from Explorer XIII and Explorer XVII satellites;D'Aiutolo;Space Res.,1964