Gabriel Y. Handler. m-Center Problem on a Directed Network. Transportation Science, 18(3):300-302, 1984. [doi]
@article{Handler84,
title = {m-Center Problem on a Directed Network},
author = {Gabriel Y. Handler},
year = {1984},
doi = {10.1287/trsc.18.3.300},
url = {http://dx.doi.org/10.1287/trsc.18.3.300},
researchr = {https://researchr.org/publication/Handler84},
cites = {0},
citedby = {0},
journal = {Transportation Science},
volume = {18},
number = {3},
pages = {300-302},
}