1. In the list of references below, a question mark after a date indicates that the paper in question had not yet appeared when this report was completed in May of 1978.
2. “Flow Algorithms”;Adelson-Velsky,1975
3. Optimum seeking with branch-and-bound;Agin;Management Sci.,1966
4. “The Design and Analysis of Computer Algorithms.”;Aho,1976
5. Maximum matching and the rank of a matrix;Anderson;SIAM J. Appl. Math.,1975