@article{1183526343,
author = {Robertson, Neil},
title = {The smallest graph of girth 5 and valency 4},
journal = {Bull. Amer. Math. Soc.},
volume = {70},
number = {6},
year = {1964},
pages = { 824-825},
language = {en},
url = {http://dml.mathdoc.fr/item/1183526343}
}
Robertson, Neil. The smallest graph of girth 5 and valency 4. Bull. Amer. Math. Soc., Tome 70 (1964) no. 6, pp. 824-825. http://gdmltest.u-ga.fr/item/1183526343/