Gary Chartrand, Frank Harary, Ortrud R. Oellermann. On the regulation number of a multigraph. Graphs and Combinatorics, 1(1):137-144, 1985. [doi]
@article{ChartrandHO85,
title = {On the regulation number of a multigraph},
author = {Gary Chartrand and Frank Harary and Ortrud R. Oellermann},
year = {1985},
doi = {10.1007/BF02582938},
url = {http://dx.doi.org/10.1007/BF02582938},
researchr = {https://researchr.org/publication/ChartrandHO85},
cites = {0},
citedby = {0},
journal = {Graphs and Combinatorics},
volume = {1},
number = {1},
pages = {137-144},
}