@article{10_4064_fm217_1_2,
     author = {Eva Kopeck\'a},
     title = {Bootstrapping {Kirszbraun's} extension theorem},
     journal = {Fundamenta Mathematicae},
     pages = {13--19},
     publisher = {mathdoc},
     volume = {217},
     number = {1},
     year = {2012},
     doi = {10.4064/fm217-1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm217-1-2/}
}