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“Congestion Toll Pricing of Traffic Networks,” Network Optimization, Springer-Verlag series Lecture Notes in Economics and Mathematical Systems, 51-71, 1997 (with P. Bergendorff and M. Ramana).
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“Bounded Flow Equilibrium Problems by Penalty Methods,” IEEE International Conference on Circuits and Computers ICCC 80, Vol. 1, 162-166, 1980. (with J. Ribera).
“Bounding Flows in Traffic Assignment Models,” Research Report No. 80-4, 1980.