Douglas Bauer, Aurora Morgana, Edward F. Schmeichel. A simple proof of a theorem of Jung. Discrete Mathematics, 79(2):147-152, 1990. [doi]
@article{BauerMS90,
title = {A simple proof of a theorem of Jung},
author = {Douglas Bauer and Aurora Morgana and Edward F. Schmeichel},
year = {1990},
doi = {10.1016/0012-365X(90)90029-H},
url = {http://dx.doi.org/10.1016/0012-365X(90)90029-H},
researchr = {https://researchr.org/publication/BauerMS90},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {79},
number = {2},
pages = {147-152},
}