@article{GDZPPN002471582,
title = {Circuits in Critical Graphs.},
journal = {Monatshefte f\"ur Mathematik},
volume = {59},
year = {1955},
pages = {178-187},
zbl = {0065.39001},
url = {http://dml.mathdoc.fr/item/GDZPPN002471582}
}
Dirac, G.A. Circuits in Critical Graphs.. Monatshefte für Mathematik, Tome 59 (1955) pp. 178-187. http://gdmltest.u-ga.fr/item/GDZPPN002471582/