@article{ARM_1997__33_1-2_a7,
     author = {Novotn\'y, Miroslav},
     title = {Homomorphisms and strong homomorphisms of relational structures},
     journal = {Archivum mathematicum},
     pages = {57--64},
     publisher = {mathdoc},
     volume = {33},
     number = {1-2},
     year = {1997},
     mrnumber = {1464301},
     zbl = {0909.08001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1997__33_1-2_a7/}
}