1. Moon: Two New Mascon Basins
2. Gottlieb, P., Jet Proptulsion Laboratory Space Programs Summary 37-55 3: 3 (1969).
3. KOZIEL, K, TRANSACTIONS OF THE INTERNATIONAL ASTRONOMICAL UNION A 12: 223 (1964).
4. Moulton, F. B., An Introduction to Celestial Mechanics: 133 (1914).
5. Mascons: Lunar Mass Concentrations