@article{MS2_1986__58_166970,
     author = {Waldemar Cieslak and J\'ozef Zajac},
     title = {The rosettes.},
     journal = {Mathematica Scandinavica},
     pages = {114--118},
     publisher = {mathdoc},
     volume = {58},
     year = {1986},
     zbl = {0594.53003},
     url = {http://geodesic.mathdoc.fr/item/MS2_1986__58_166970/}
}