1. Neu, J.T., and .Ihrmmer, R. S. "Theoretical and Practical Implications of the Bidirectional Reflectance of Spacecraft Surfaces", AIAA Paper No. 68-28.
2. Tien, C, L. "Reflectance of a Random Rough Surface of Finite Conductivity From Exact Theory", Appendix to Air Force Materials Laboratory Technical Report No. AFML-TR64-363, "Investigation of the Effect of Surface Condition on the Radiant Properties of Metals'; by R. E. Rolling,A. I.Funai, and J. R. Grammer,November 1964 (DDC Document No. 466662).
3. Houchens, A. F., and Hering, R. Go, "Bidirectional Reflectance of Rough Metal Surfaces". AIAA Paper No. 67-319.