1. On the formation of celestial bodies;Alfvén;Icarus,1964
2. On the origin of the solar system;Alfvén,1967
3. Astrophysical Quantities;Allen,1963
4. Accretion rate of cosmic matter from irridium and osmium content of deep sea sediments;Barker;Geochim. Cosmochim. Acta,1968
5. A survey paper, presented at Conference on Zodiacal Light and the Interplanetary Medium in Hawaii;Biermann,1967