Volume 44, Numbers 1-2, July 1990
J. H. Rieger
: The Geometry of View Space of Opaque Objects Bounded by Smooth Surfaces.
W. Eric L. Grimson
: The Combinatorics of Object Recognition in Cluttered Environments Using Constrained Search.
: Dempster's Rule of Combination is #P-Complete.
Volume 44, Number 3, August 1990
: Models of Musical Communication and Cognition.