F. H. Liu, S.-Y. Shen. The fleet size and mix vehicle routing problem with time windows. JORS, 50(7):721-732, 1999. [doi]
@article{LiuS99-6,
title = {The fleet size and mix vehicle routing problem with time windows},
author = {F. H. Liu and S.-Y. Shen},
year = {1999},
doi = {10.1057/palgrave.jors.2600763},
url = {https://doi.org/10.1057/palgrave.jors.2600763},
researchr = {https://researchr.org/publication/LiuS99-6},
cites = {0},
citedby = {0},
journal = {JORS},
volume = {50},
number = {7},
pages = {721-732},
}