1.

Technical Paper
Technical Paper
1. ORBITAL TRANSFER VEHICLE CONCEPT DEFINITION AND SYSTEM ANALYSIS STUDY, 1986. VOLUME9: STUDY EXTENSION RESULTS Final Report, Jan. - Sep. 1986
Kofal, Allen E.
Pub. info.: NASA Technical Reports(N89).  (NASA-CR-183549),  pp.1-298,  1987.  National Aeronautics and Space Administration
2.

Technical Paper
Technical Paper
2. Orbital Transfer Vehicle Concept Definition And System Analysis Study. Volume 2: OTV CO 1985
Kofal, Allen E.
Pub. info.: NASA Technical Reports(N88-).  (NASA-CR-179321),  pp.1-70,  1987.  National Aeronautics and Space Administration