%0 Journal Article %A António Caetano %T Approximation by functions of compact support in Besov-Triebel-Lizorkin spaces on irregular domains %J Studia Mathematica %D 2000 %P 47-63 %V 142 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-142-1-47-63/ %R 10.4064/sm-142-1-47-63 %G en %F 10_4064_sm_142_1_47_63