arXiv 2018-01-29 EN A Method to Compute the Sparse Graphs for Traveling Salesman Problem Based on Frequency Quadrilaterals Wang, Yong · Remmel, Jeffrey
arXiv 2016-04-04 EN Approximating (Unweighted) Tree Augmentation via Lift-and-Project (Part 0: 1.8+ε approximation for (Unweighted) TAP) Cheriyan, Joe · Gao, Zhihan
arXiv 2015-08-29 EN Approximating (Unweighted) Tree Augmentation via Lift-and-Project, Part I: Stemless TAP Cheriyan, Joe · Gao, Zhihan
arXiv 2015-07-06 EN Approximating (Unweighted) Tree Augmentation via Lift-and-Project, Part II Cheriyan, Joe · Gao, Zhihan
arXiv 2015-05-13 EN Some Analytics for Steiner Minimal Tree Problem for Four Terminals Uteshev, Alexei Yu.