TY - JOUR AU - Naumann, J. AU - Simader, C. G. TI - A second look on definition and equivalent norms of Sobolev spaces JO - Mathematica Bohemica PY - 1999 SP - 315 EP - 328 VL - 124 IS - 2-3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/MB.1999.126243/ DO - 10.21136/MB.1999.126243 LA - en ID - 10_21136_MB_1999_126243 ER -