@article{10_1017_S0017089500001269,
     author = {Wajnryb, Bronislaw and Zaks, Abraham},
     title = {On the flat overrings of an integral domain},
     journal = {Glasgow mathematical journal},
     pages = {162--165},
     year = {1971},
     volume = {12},
     number = {2},
     doi = {10.1017/S0017089500001269},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500001269/}
}