Gregory Gutin, Igor Razgon, Eun Jung Kim. Minimum leaf out-branching and related problems. Theoretical Computer Science, 410(45):4571-4579, 2009. [doi]
@article{GutinRK09,
title = {Minimum leaf out-branching and related problems},
author = {Gregory Gutin and Igor Razgon and Eun Jung Kim},
year = {2009},
doi = {10.1016/j.tcs.2009.03.036},
url = {http://dx.doi.org/10.1016/j.tcs.2009.03.036},
researchr = {https://researchr.org/publication/GutinRK09},
cites = {0},
citedby = {0},
journal = {Theoretical Computer Science},
volume = {410},
number = {45},
pages = {4571-4579},
}