Normalizing extensions of semiprime rings. Ferrero, Miguel, Steffenon, Rogério Ricardo (2004) Beiträge zur Algebra und Geometrie
Note on Categories of Indecomposable Modules Manabu Harada (1972) Publications du Département de mathématiques (Lyon)
Note on pure-projectivity of modules L. Fuchs, G. J. Hauptfleisch (1973) Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
Notes on generalized prime and coprime modules. I. Josef Jirásko (1981) Commentationes Mathematicae Universitatis Carolinae
Notes on generalized prime and coprime modules. II. Josef Jirásko (1981) Commentationes Mathematicae Universitatis Carolinae
Notes on radical filters of ideals Tomáš Kepka (1974) Commentationes Mathematicae Universitatis Carolinae
Notes on slender prime rings Robert El Bashir, Tomáš Kepka (1996) Commentationes Mathematicae Universitatis Carolinae If R is a prime ring such that R is not completely reducible and the additive group R ( + ) is not complete, then R is slender.