@article{MS2_1992__70_1_167186, author = {R. Gilmer and W. Heinzer}, title = {An {Application} of {Jonsson} {Modules} to {Some} {Questions} {Concerning} {Proper} {Subrings.}}, journal = {Mathematica Scandinavica}, pages = {34--42}, year = {1992}, volume = {70}, number = {1}, zbl = {0782.13005}, url = {http://geodesic.mathdoc.fr/item/MS2_1992__70_1_167186/} }