@article{INTA_1975_13_a1,
     author = {M. Sh. Tsalenko and E. G. Shul'geifer},
     title = {Categories},
     journal = {Itogi Nauki i Tekhniki. Seriya Algebra. Geometriya. Topologiya },
     pages = {51--147},
     publisher = {mathdoc},
     volume = {13},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTA_1975_13_a1/}
}