Bernard Kaufman

Astrodynamics 1999: Proceedings of the Aas/Aiaa Astrodynamics Conference Held August 16-19, 1999, Girdwood, Alaska (Advances in the Astronautical Sciences Series (Cloth), 103)  Aas Aiaa Astrodynamics Conference Jay W. Middour Felix R. Hoots Bernard Kaufman K. Terry Alfriend Madeleine Bera Kathleen C. Howell American Astronautical Society Hardcover. American Astronautical Society, 2000-06-01 ISBN 9780877034674     Astrodynamics 1997: Proceedings of the Aas/Aiaa Astrodynamics Conference Held August 4-7, 1997, Sun Valley, Idaho (Advances in the Astronautical Sciences)  Aas Idaho) Aiaa Astrodynamics Conference (1997 Sun Valley Felix R. Hoots American Astronautical Society Bernard Kaufman Paul J. Cefola David B. Spencer Hardcover. Amer Astronautical Society, 1998-02-01 ISBN 9780877034414     Aas/AIAA Astrodynamics Conference, Aug. 12-15, 1985, Vail, Co (Advances in the Astronautical Sciences,)  Bernard Kaufman Felix R. Hoots Joseph J. Liu Paperback. Univelt, 1986-05-13 ISBN 9780877032465