1. C. Hemenway, Dr. Hallgren, “Time variation of the Altitude Distribution of the Cosmic Dust Layer in the Upper Atmosphere”, Space Research X, p. 272–280, 1970.
2. C. Hemenway, D. Hallgren and J. Kerridge, “Results from the Gemini S-10 and S-12 Micrometeorite Experiments”, Space Research VIII, p. 521–535, 1968.
3. C. Hemenway, D. Hallgren and D. Tackett, “Near-Earth Cosmic Dust Results from S-149 AIAA/AGU Conference on the Scientific Experiments of SKYLAB, Huntsville, Alabama, Oct. 30–Nov. 1, 1974.
4. D. Hallgren, C. Hemenway and W. Radigan, “Micrometeorite Penetration Effects in Gold Foil”, COSPAR, Varna, Bulgaria (in press) 1975.
5. K. Nagel, H. Fechtig, E. Schneider and G. Neukum, “Micrometeorite Impact Craters on Skylab Experiment S-149”, this volume, 1976.