@article{1256045973, author = {Haack, Joel K.}, title = {Isomorphisms of incidence rings}, journal = {Illinois J. Math.}, volume = {28}, number = {4}, year = {1984}, pages = { 676-683}, language = {en}, url = {http://dml.mathdoc.fr/item/1256045973} }
Haack, Joel K. Isomorphisms of incidence rings. Illinois J. Math., Tome 28 (1984) no. 4, pp. 676-683. http://gdmltest.u-ga.fr/item/1256045973/