@article{ARM_1973_9_2_a2,
     author = {Chajda, Ivan},
     title = {Direct products of homomorphic mappings. {I}},
     journal = {Archivum mathematicum},
     pages = {61--65},
     year = {1973},
     volume = {9},
     number = {2},
     mrnumber = {0344177},
     zbl = {0279.08004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1973_9_2_a2/}
}