@article{DeHiKr2011,
Author = {Tamal K. Dey and Anil N. Hirani and Bala Krishnamoorthy},
Title = {Optimal Homologous Cycles, Total Unimodularity, and Linear Programming},
Journal = {SIAM Journal on Computing},
Volume = {40},
Number = {4},
Pages = {1026--1044},
Doi = {10.1137/100800245},
Year = {2011}}