Alexander V. Karzanov. Integer Concave Cocirculations and Honeycombs. In George L. Nemhauser, Daniel Bienstock, editors, Integer Programming and Combinatorial Optimization, 10th International IPCO Conference, New York, NY, USA, June 7-11, 2004, Proceedings. Volume 3064 of Lecture Notes in Computer Science, pages 368-387, Springer, 2004. [doi]
Abstract is missing.