@article{AUPO_1981__20_1_a5,
     author = {Kluck\'y, Dalibor},
     title = {Natural planar ternary rings},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {47--57},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {1981},
     mrnumber = {1369691},
     zbl = {0483.51003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1981__20_1_a5/}
}