The following publications are possibly variants of this publication:
- An improved approximation algorithm for the clustered traveling salesman problemXiaoguang Bao, Zhaohui Liu. ipl, 112(23):908-910, 2012. [doi]
- An Approximation Algorithm for the Clustered Path Travelling Salesman ProblemJiaxuan Zhang, Suogang Gao, Bo Hou, Wen Liu. AAIM 2022: 15-27 [doi]
- An approximation algorithm for the clustered path travelling salesman problemJiaxuan Zhang, Suogang Gao, Bo Hou, Wen Liu. jco, 45(4):104, May 2023. [doi]