@article{AA_1992_4_1_a3,
     author = {A. I. Generalov},
     title = {Relative homological algebra in pre-abelian categories. {I.~Derived} categories},
     journal = {Algebra i analiz},
     pages = {98--119},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_1992_4_1_a3/}
}