| ZHANG X X, CHEN J L. On n-Semihereditary and n-Coherent Rings[J]. Inter Electron J Algebra, 2007(1): 1-10. |
| 申婧雯, 杨晓燕. 余纯FPn-平坦模[J]. 西南大学学报(自然科学版), 2018, 40(6): 69-72. |
| MAO L X. Relative Coherent Modules and Semihereditary Modules[J]. Communications in Algebra, 2019, 47(9): 3583-3596. doi: 10.1080/00927872.2019.1567753 |
| 魏佳玲, 杨晓燕. GχI-内射模[J]. 西南师范大学学报(自然科学版), 2018, 43(10): 9-12. |
| 宋彦辉, 梁力. 模的限制内射维数[J]. 西南大学学报(自然科学版), 2018, 40(12): 94-99. |
| LUO X Q, MAO L X. Modules Whose Endomorphism Rings Are (m, n)-Coherent[J]. Algebra Colloq, 2019, 26(2): 231-242. doi: 10.1142/S100538671900018X |
| ZHANG X X, CHEN J L, ZHANG J. On (m, n)-Injective Modules and (m, n)-Coherent Rings[J]. Algebra Colloq, 2005, 12(1): 149-160. doi: 10.1142/S1005386705000143 |
| ENOCHS E E, JENDA O M G. Relative Homological Algebra[M]. Berlin, New-York: de Gruyter, 2000. |
| ROTMAN J. An Introduction to Homological Algebra[M]. Amsterdam: Elsevier, 1979. |
| CRIVEI S, PREST M, TORRECILLAS B. Covers in Finitely Accessible Categories[J]. Proc Amer Math Soc, 2010, 138(4): 1213-1221. doi: 10.1090/S0002-9939-09-10178-8 |
| CHEN J L, DING N Q. A Note on Existence of Envelopes and Covers[J]. Bull Austral Math Soc, 1996, 54(3): 383-390. doi: 10.1017/S0004972700021791 |
| CHEATHAM T J, STONE D R. Flat and Projective Character Modules[J]. Proc Amer Math Soc, 1981, 81(2): 175-177. doi: 10.1090/S0002-9939-1981-0593450-2 |
| WISBAUER R. Foundations of Module and Ring Theory[M]. Philadelphia: Gordon and Breach, 1991. |