1. Evidence of hyperbolic cosmic dust particles;Berg,1972
2. More than two years of micrometeorite data from two pioneer satellites;Berg;Space Res.,1971
3. Apollo Window Meteroid Experiment;Cour-Palais;NASA SP-315,1972
4. Recent NASA meteroid penetration results from satellites;D'Aiutolo,1965
5. Mass distribution of meteors;Dohnanyi;Astrophys. J.,1967