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    Tethers in space; Proceedings of the International Conference, Arlington, VA, Sept. 17-19, 1986

    Bainum, Peter M. / Bekey, Ivan / Guerriero, Luciano et al. | NTRS | 1987

    Innovative uses of tethers in space

    Ionasescu, Rodica / Penzo, Paul A. | NTRS | 1988

    Space tethers

    Ionasecu, Rodica / Penzo, Paul A. | NTRS | 1988

    Design options and analysis of variable gravity systems in space

    Penzo, Paul A. / Ionasescu, Rodica | NTRS | 1989

    Mission design for an orbiting volcano observatory

    Penzo, Paul A. / Johnston, M. Daniel | NTRS | 1990

    Mission design for an Orbiting Volcano Observatory

    PENZO, PAUL A. / JOHNSTON, M. D. | AIAA | 1992

    Low-energy multiple rendezvous of main belt asteroids

    Penzo, Paul A. / Bender, David F. | NTRS | 1992

    Mission design for an Orbiting Volcano Observatory

    Penzo, Paul A. / Johnston, M. D. | NTRS | 1992

    A Demonstration Plan For Lalser-Beamed Power

    Abraham, Douglas S. / Anspaugh, Bruce E. / Nesmith, Bill J. et al. | NTRS | 1993

    Unique Design Aspects of Small Spacecraft for Low Cost Planetary Missions

    Ridenoure, Rex W. / Penzo, Paul A. / Jones, Ross M. | NTRS | 1994

    The Outer Planets: Getting There Fast

    Penzo, Paul A. | NTRS | 1996

      The Outer Planets: Getting There Fast

      Penzo, Paul A. | NTRS | 1995