@article{AUPO_2007__46_1_a1,
     author = {Chajda, Ivan and Hala\v{s}, Radom{\'\i}r},
     title = {Varieties satisfying the triangular scheme need not be congruence distributive},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {19--24},
     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {2007},
     mrnumber = {2387489},
     zbl = {1144.08006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_2007__46_1_a1/}
}