V. Venkata Rao, R. Sridharan. Minimum-weight rooted not-necessarily-spanning arborescence problem. Networks, 39(2):77-87, 2002. [doi]
@article{RaoS02,
title = {Minimum-weight rooted not-necessarily-spanning arborescence problem},
author = {V. Venkata Rao and R. Sridharan},
year = {2002},
doi = {10.1002/net.10015},
url = {http://dx.doi.org/10.1002/net.10015},
researchr = {https://researchr.org/publication/RaoS02},
cites = {0},
citedby = {0},
journal = {Networks},
volume = {39},
number = {2},
pages = {77-87},
}