1. Lunar surface mechanical properties;Christensen,1967
2. Letter;Fremlin;Nature,1959
3. The case for a cohesive lunar surface model;Halajian;Ann. N. Y. Acad. Sci.,1965
4. Optical properties and infrared emission of the moon;Hopfield,1966-1967
5. Lunar surface thermal characteristics from Surveyor I;Lucas;J. Geophys. Res.,1967