@article{CMJ_2002__52_2_a16,
     author = {Novotn\'y, Miroslav},
     title = {Homomorphisms of heterogeneous algebras},
     journal = {Czechoslovak Mathematical Journal},
     pages = {415--428},
     publisher = {mathdoc},
     volume = {52},
     number = {2},
     year = {2002},
     mrnumber = {1905448},
     zbl = {1016.08005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2002__52_2_a16/}
}