@article{SM_1969_9_4_a5,
     author = {M. Sh. Tsalenko},
     title = {Functors between structured categories},
     journal = {Sbornik. Mathematics},
     pages = {497--513},
     year = {1969},
     volume = {9},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1969_9_4_a5/}
}