George D. Stamoulis and John N. Tsitsiklis.
"February 1990/Revised June 1990."--Cover. Cover title.
Includes bibliographical references (p. 36-37).
Research supported by the NSF. ECS-8552419 Research supported by Bellcore, Inc. and Du Pont. Research supported by the ARO. DAAL03-86-K-0171 Research supported by a fellowship from the Vinton Hayes Fund.