Sylvia Boyd, Yao Fu, Yu Sun. A $\frac{5}{4}$ -Approximation for Subcubic 2EC Using Circulations. In Jon Lee, Jens Vygen, editors, Integer Programming and Combinatorial Optimization - 17th International Conference, IPCO 2014, Bonn, Germany, June 22-24, 2014. Proceedings. Volume 8494 of Lecture Notes in Computer Science, pages 186-197, Springer, 2014. [doi]
Abstract is missing.