Quasimodules generated by three elements Tomáš Kepka, Petr Němec (1979) Commentationes Mathematicae Universitatis Carolinae
Quasi-radicals and Radicals in Categories A. Buys, S. Veldsman (1985) Publications de l'Institut Mathématique
Quotient Rings of Right Noetherian Rings at Semi-Prime Ideals Gerhard O. Michler (1973) Publications du Département de mathématiques (Lyon)