1. J. S. Alin, Structure of torsion modules, Ph.D. Thesis, Univ. of Nebraska, Lincoln, 1967.
2. Goldie’s torsion theory and its derived functor;Alin, J. S.;Pacific J. Math.,1968
3. Finitistic dimension and a homological generalization of semi-primary rings;Bass, Hyman;Trans. Amer. Math. Soc.,1960
4. A torsion theory for Abelian categories;Dickson, Spencer E.;Trans. Amer. Math. Soc.,1966
5. Des catégories abéliennes;Gabriel, Pierre;Bull. Soc. Math. France,1962