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2. Positive stable laws and the mass distribution of planetesimals;Marcus;Icarus,1965
3. Formation of the planets by accretion of planetesimals; some statistical problems;Marcus;Icarus,1967
4. Special case of the solution of the coagulation equation;Safronov;Dokl. Akad. Nauk SSSR,1962
5. On the dispersion of velocities in rotating systems of gravitating bodies with nonelastic collisions;Safronov;Voprosy Kosmogonii,1962