Rachel E. Learned ... [et al.].
Caption title.
Includes bibliographical references (p. [4]-[5]).
Supported by the Dept. of the Air Force. F19628-C-90-0002 Supported by the Army Research Office under a grant by the Air Force Office of Scientific Research. F49620-92-J-0002 Supported by a research fellowship from the Deutsche Forschungsgemeinschaft.