@article{10_21136_MB_2007_133997,
     author = {Zaj{\'\i}\v{c}ek, Lud\v{e}k},
     title = {On sets of non-differentiability of {Lipschitz} and convex functions},
     journal = {Mathematica Bohemica},
     pages = {75--85},
     publisher = {mathdoc},
     volume = {132},
     number = {1},
     year = {2007},
     doi = {10.21136/MB.2007.133997},
     mrnumber = {2311755},
     zbl = {1171.46314},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2007.133997/}
}