| ENOCHS E E, JENDA O M G. Copure Injective Resolutions, Flat Resolevents and Dimensions[J]. Commentationes Mathematicae Universitatis Carolinae, 1993, 34(2): 203-211. |
| DING N Q, CEHN J L. On Copure Flat Modules and Flat Resolvents[J]. Commanications in Algebra, 1996, 24(3): 243-262. |
| MAO L X. Adjoint Preenvelope and Precover of Modules[J]. Publicationes Mathematicae Debrecen, 2016, 88(1-2): 139-161. doi: 10.5486/PMD |
| BRAVO D, PÉREZ M A. Finiteness Conditions and Cotorsion Pairs[J]. Journal of Pure and Applied Algebra, 2017, 221(6): 1249-1267. doi: 10.1016/j.jpaa.2016.09.008 |
| ENOCHS E E, JENDA O M G. Relative Homological Algebra[M]. Berlin: Walter de Gruyter, 2000. |
| ROTMAN J J. An Introduction to Homological Algera[M]. New York: Academic Press, 1979. |