@article{
BurSu:17-013,
author={M. Burger and Z. Su and B. {D}e Schutter},
title={A Node Current-based 2-Index Formulation for the Fixed-Destination
Multi-Depot Travelling Salesman Problem},
journal={European Journal of Operational Research},
volume={265},
number={2},
pages={463--477},
month=mar,
year={2018},
doi={
10.1016/j.ejor.2017.07.056}
}