@article{RSMUP_1987__77__125_0,
     author = {Bergen, Jeffrey and Giambruno, Antonio},
     title = {$f$-radical extensions of rings},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {125--133},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {77},
     year = {1987},
     mrnumber = {904615},
     zbl = {0623.16008},
     language = {en},
     url = {http://archive.numdam.org/item/RSMUP_1987__77__125_0/}
}