I'd like to solve the min-cost flow problem for graphs by cancelling negative cycles. Goldberg and Tarjan published a paper with this title in 1989 but I am unable to track down either a copy of the original or any more recent derived works that might explain the same algorithm.

Does anyone have a document that describes this algorithm or any code that implements it?

Referring to the classical "Network Flows: Theory, Algorithms, and Applications"

You can find code for the Cycle-Canceling algorithm as well as other min-cost flow minimizers in the LEMON C++ library:

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