@article{1256045846,
author = {Froelich, John},
title = {The isomorphism problem for incidence rings},
journal = {Illinois J. Math.},
volume = {29},
number = {4},
year = {1985},
pages = { 142-152},
language = {en},
url = {http://dml.mathdoc.fr/item/1256045846}
}
Froelich, John. The isomorphism problem for incidence rings. Illinois J. Math., Tome 29 (1985) no. 4, pp. 142-152. http://gdmltest.u-ga.fr/item/1256045846/