%0 Journal Article %A Gardiner, Stephen J. %T Superharmonic extension and harmonic approximation %J Annales de l'Institut Fourier %D 1994 %P 65-91 %V 44 %N 1 %I Institut Fourier %C Grenoble %U http://www.numdam.org/articles/10.5802/aif.1389/ %R 10.5802/aif.1389 %G en %F AIF_1994__44_1_65_0