%0 Journal Article %A Kružík, Martin %T A note on equality of functional envelopes %J Mathematica Bohemica %D 2003 %P 169-178 %V 128 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.2003.134039/ %R 10.21136/MB.2003.134039 %G en %F 10_21136_MB_2003_134039