Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1975__30_141151, author = {John Roberts}, title = {Vertex {Cyclic} {Graphs.}}, journal = {Elemente der Mathematik}, pages = {5--10}, publisher = {mathdoc}, volume = {30}, year = {1975}, zbl = {0307.05125}, url = {http://geodesic.mathdoc.fr/item/ELMA_1975__30_141151/} }
John Roberts. Vertex Cyclic Graphs.. Elemente der Mathematik, Tome 30 (1975), pp. 5-10. http://geodesic.mathdoc.fr/item/ELMA_1975__30_141151/