Fan Wang, Andrew Lim, Zhou Xu. The one-commodity pickup and delivery travelling salesman problem on a path or a tree. Networks, 48(1):24-35, 2006. [doi]
@article{WangLX06:0,
title = {The one-commodity pickup and delivery travelling salesman problem on a path or a tree},
author = {Fan Wang and Andrew Lim and Zhou Xu},
year = {2006},
doi = {10.1002/net.20116},
url = {http://dx.doi.org/10.1002/net.20116},
researchr = {https://researchr.org/publication/WangLX06%3A0},
cites = {0},
citedby = {0},
journal = {Networks},
volume = {48},
number = {1},
pages = {24-35},
}