Arthur C. Clarke
Unknown Author
Robert G. Jahn
United States. General Accounting Office
T. B. Pawlicki
Brown, Charles D.
Philip G. Hill
E. M. Goodger
C. C. Chamis
Paul A. LaViolette
Claudio Bruno
J. W. Cornelisse
Dennis G. Shepherd
J. R. Mason
James R. Stone
Martin J.L. Turner
Peter J. Turchi
G. Paul Richter