1. Boggs, D., Supporting Research and Advanced Development, Space Programs Summary 37-47 3: 21 (1967).
2. Moon: Two New Mascon Basins
3. JEFFREYS, H, DYNAMICS OF MOON, PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES 296: 245 (1967).
4. KOZIEL, K, DIFFERENCES IN MOONS MOMENTS OF INERTIA, PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES 296: 248 (1967).
5. LAING, P.A., AM ASTRON SOC B 2: 248 (1970).