Ikeda-Nakayama modules. Wisbauer, Robert, Yousif, Mohamed F., Zhou, Yiqiang (2002) Beiträge zur Algebra und Geometrie
Injective and projective properties of R [ x ] -modules Sangwon Park, Eunha Cho (2004) Czechoslovak Mathematical Journal We study whether the projective and injective properties of left R -modules can be implied to the special kind of left R [ x ] -modules, especially to the case of inverse polynomial modules and Laurent polynomial modules.
Injektive Moduln über Ringen linearer Differentialoperatoren. Günther Hauger (1978/1979) Monatshefte für Mathematik