@article{GDZPPN002301415, title = {The Connectivity of Line-Graphs.}, journal = {Mathematische Annalen}, volume = {180}, year = {1969}, pages = {170-174}, zbl = {0167.52203}, url = {http://dml.mathdoc.fr/item/GDZPPN002301415} }
CHARTRAND, G.; STEWART, M.J. The Connectivity of Line-Graphs.. Mathematische Annalen, Tome 180 (1969) pp. 170-174. http://gdmltest.u-ga.fr/item/GDZPPN002301415/