TY - JOUR AU - Weidemaier, Peter TI - The trace theorem $W^{2,1}_p(\Omega_T) \ni f \mapsto \nabla_{\!x} f \in W^{1-1/p,1/2-1/2p}_p(\partial \Omega_T)$ revisited JO - Commentationes Mathematicae Universitatis Carolinae PY - 1991 SP - 307 EP - 314 VL - 32 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1991__32_2_a12/ LA - en ID - CMUC_1991__32_2_a12 ER -