Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1877__12_156787, author = {Schr\"oder}, title = {Note \"uber den {Operationskreis} des {Logikcalculs}}, journal = {Mathematische Annalen}, pages = {481--484}, publisher = {mathdoc}, volume = {12}, year = {1877}, url = {http://geodesic.mathdoc.fr/item/MAN_1877__12_156787/} }
Schröder. Note über den Operationskreis des Logikcalculs. Mathematische Annalen, Tome 12 (1877), pp. 481-484. http://geodesic.mathdoc.fr/item/MAN_1877__12_156787/