@article{CMUC_1990__31_1_a9,
     author = {Koubek, V\'aclav},
     title = {Finite-to-finite universal varieties of distributive double $p$-algebras},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {67--83},
     publisher = {mathdoc},
     volume = {31},
     number = {1},
     year = {1990},
     mrnumber = {1056172},
     zbl = {0714.18003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1990__31_1_a9/}
}