Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MOMA_1969__73_177475, author = {Martin Aigner}, title = {Graphs and {Partial} {Orderings.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {385--396}, publisher = {mathdoc}, volume = {73}, year = {1969}, zbl = {0184.27502}, url = {http://geodesic.mathdoc.fr/item/MOMA_1969__73_177475/} }
Martin Aigner. Graphs and Partial Orderings.. Monatshefte für Mathematik, Tome 73 (1969), pp. 385-396. http://geodesic.mathdoc.fr/item/MOMA_1969__73_177475/