1.

Technical Paper

Technical Paper
Schlich, Hugo
Pub. info.: NASA Technical Reports.  pp.1-146,  1989.  National Aeronautics and Space Adminstration
2.

Technical Paper

Technical Paper
Meyer, Werner ; Jank, Thomas
Pub. info.: NASA Technical Reports.  pp.1-49,  1989.  National Aeronautics and Space Adminstration