@article{UM_2004_12_1_a4,
     author = {Vojtekov\'a, Lenka},
     title = {Flexag\'ony {Martina} {Gardnera}},
     journal = {U\v{c}itel matematiky},
     pages = {39--45},
     year = {2004},
     volume = {12},
     number = {1},
     language = {sk},
     url = {http://geodesic.mathdoc.fr/item/UM_2004_12_1_a4/}
}