@article{RM_1981_36_3_a4,
     author = {V. V. Fedorchuk},
     title = {Covariant functors in the category of compacta, absolute retracts, and $Q$-manifolds},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {211--233},
     publisher = {mathdoc},
     volume = {36},
     number = {3},
     year = {1981},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1981_36_3_a4/}
}