@article{AUPCM_2014_13_a0,
     author = {Cicho\'n, Dariusz},
     title = {\`A la recherche de la preuve perdue: a simple proof of the {Ficken} theorem},
     journal = {Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica},
     publisher = {mathdoc},
     number = {13},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPCM_2014_13_a0/}
}