@article{10_1007_s10587_011_0036_8, author = {Yan, Xiao Guang and Zhu, Xiao Sheng}, title = {Characterizations of some rings with $\mathcal {C}$-projective, $\mathcal {C}${-(FP)-injective} and $\mathcal {C}$-flat modules}, journal = {Czechoslovak Mathematical Journal}, pages = {641--652}, publisher = {mathdoc}, volume = {61}, number = {3}, year = {2011}, doi = {10.1007/s10587-011-0036-8}, mrnumber = {2853080}, zbl = {1249.13004}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-011-0036-8/} }