@article{1077472967,
author = {Foster, Alfred L.},
title = {The idempotent elements of a commutative ring form a Boolean
algebra; ring-duality and transformation theory},
journal = {Duke Math. J.},
volume = {12},
number = {1},
year = {1945},
pages = { 143-152},
language = {en},
url = {http://dml.mathdoc.fr/item/1077472967}
}
Foster, Alfred L. The idempotent elements of a commutative ring form a Boolean
algebra; ring-duality and transformation theory. Duke Math. J., Tome 12 (1945) no. 1, pp. 143-152. http://gdmltest.u-ga.fr/item/1077472967/