@article{10_21136_CMJ_1976_101389,
     author = {Koubek, V\'aclav and Reiterman, Jan},
     title = {A set functor which commutes with all homfunctors is a homfunctor},
     journal = {Czechoslovak Mathematical Journal},
     pages = {183--191},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {1976},
     doi = {10.21136/CMJ.1976.101389},
     mrnumber = {0401863},
     zbl = {0336.18006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1976.101389/}
}