@article{MOMA_1971__75_177534,
     author = {Ference Sz\'asz},
     title = {On the {Idealizer} of a {Subring.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {65--68},
     publisher = {mathdoc},
     volume = {75},
     year = {1971},
     zbl = {0208.04602},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1971__75_177534/}
}