@article{AUCMP_1986__27_2_a4,
     author = {Sukov\'a, E. and Vin\'arek, J.},
     title = {Different types of products and subdirectly irreducible},
     journal = {Acta Universitatis Carolinae. Mathematica et Physica},
     pages = {23--30},
     publisher = {mathdoc},
     volume = {27},
     number = {2},
     year = {1986},
     mrnumber = {0878624},
     zbl = {0614.05051},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUCMP_1986__27_2_a4/}
}