1. Feasibility of determining the mass of an asteroid from a spacecraft flyby;Anderson,1971
2. VII Magnitudes, colors, types and adopted diameters of the asteroids;Bowell,1979
3. Theorie au deuxieme order des planetes inferieures;Bretagnon;Astron. Astrophys.,1980
4. Varying G.;Canuto;Mon. Not. Roy. Astro. Soc.,1979
5. Asteroids;Gehrels,1979