@article{1183505307, author = {MacLane, Saunders}, title = {A conjecture of Ore on chains in partially ordered sets}, journal = {Bull. Amer. Math. Soc.}, volume = {49}, number = {12}, year = {1943}, pages = { 567-568}, language = {en}, url = {http://dml.mathdoc.fr/item/1183505307} }
MacLane, Saunders. A conjecture of Ore on chains in partially ordered sets. Bull. Amer. Math. Soc., Tome 49 (1943) no. 12, pp. 567-568. http://gdmltest.u-ga.fr/item/1183505307/