Hyung-Chan An, Robert D. Kleinberg, David B. Shmoys. Improving Christofides' Algorithm for the s-t Path TSP. Journal of the ACM, 62(5):34, 2015. [doi]
@article{AnKS15,
title = {Improving Christofides' Algorithm for the s-t Path TSP},
author = {Hyung-Chan An and Robert D. Kleinberg and David B. Shmoys},
year = {2015},
doi = {10.1145/2818310},
url = {http://doi.acm.org/10.1145/2818310},
researchr = {https://researchr.org/publication/AnKS15},
cites = {0},
citedby = {0},
journal = {Journal of the ACM},
volume = {62},
number = {5},
pages = {34},
}