1. Christensen , E. M. Lunar surface mechanical properties Surveyor 6 Mission Report, 2, Science Results Pasadena 1967
2. de Wys , J. N. Electromagnetic properties: Magnet test Surveyor Mission 6 Mission Report, 2, Science Results Pasadena 1967
3. Introduction' Surveyor 5 mission report, 2, Science results;Jaffe;J. Geophys. Res.,1968
4. Jaffe , L. D. Principal science results from Surveyor 6 Surveyor 6 Mission Report, 2, Science Results Pasadena 1967