Choaib Bousba, Laurence A. Wolsey. Finding minimum cost directed trees with demands and capacities. Annals OR, 33(4):285-303, 1991. [doi]
@article{BousbaW91,
title = {Finding minimum cost directed trees with demands and capacities},
author = {Choaib Bousba and Laurence A. Wolsey},
year = {1991},
doi = {10.1007/BF02071977},
url = {https://doi.org/10.1007/BF02071977},
researchr = {https://researchr.org/publication/BousbaW91},
cites = {0},
citedby = {0},
journal = {Annals OR},
volume = {33},
number = {4},
pages = {285-303},
}