Publications
 
 (1978).  A Characterization of the Minimum Cycle Mean in a Digraph.  
Discrete Mathematics (Netherlands). 23(3), 309-311.
 
 (1977).  Probabilistic Analysis of Partitioning Algorithms for the Traveling-salesman Problem in the Plane.  
Mathematics of Operations Research. 2(3), 209-224.
 
 (1976).  On the Optimality of Huffman Trees.  
SIAM Journal on Applied Mathematics. 31(2), 368-378.
 
 (1975).  On the Computational Complexity of Combinatorial Problems.  
Networks. 5, 
 
 (1975).  Near-optimal Solutions to a 2-dimensional Placement Problem.  
SIAM Journal on Computing. 4(3), 271-286.
 
 (1975).  Probabilistic Behavior of a Naive Coloring Algorithm on Random Graphs.  
Bulletin of the Operations Research Society of America. 23, 
 
 (1975).  Two Special Cases of the Assignment Problem.  
Discrete Mathematics (Netherlands). 13(2), 129-142.
 
 (1974).  On the Computational Complexity of Combinatorial Problems.  
 45-68.
 
 (1974).  On the Optimality of Huffman Trees.  
 
 
 (1973).  An n5/2 Algorithm for Maximum Matchings in Bipartite Graphs.  
SIAM Journal on Computing. 2(4), 225-231.
 
 (1972).  A Phenomenon in the Theory of Sorting.  
Journal of Computer and System Sciences. 6(2), 103-115.
 
 (1972).  Theoretical Improvements in Algorithmic Efficiency for Network Flow Problems.  
Journal of the Association for Computing Machinery. 19(2), 248-264.

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