Eliminating Cycles in the Discrete Torus.

Béla Bollobás Guy Kindler Imre Leader Ryan O'Donnell Eliminating Cycles in the Discrete Torus. 446-454 2008 50 Algorithmica 4 http://dx.doi.org/10.1007/s00453-007-9095-5 db/journals/algorithmica/algorithmica50.html#BollobasKLO08