TY - JOUR AU - Zajíček, Luděk TI - On sets of non-differentiability of Lipschitz and convex functions JO - Mathematica Bohemica PY - 2007 SP - 75 EP - 85 VL - 132 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/MB.2007.133997/ DO - 10.21136/MB.2007.133997 LA - en ID - 10_21136_MB_2007_133997 ER -