TY - JOUR AU - F. Stenger TI - Optimal Convergence of Minimum Norm Approximations in Hp. JO - Numerische Mathematik PY - 1977 SP - 345 EP - 362 VL - 29 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/NUMA_1977__29_132525/ ID - NUMA_1977__29_132525 ER -