%0 Journal Article %A Djivede Kelome %A Andrzej Świ/ech %T Perron's method and the method of relaxed limits for “unbounded” PDE in Hilbert spaces %J Studia Mathematica %D 2006 %P 249-277 %V 176 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4064/sm176-3-4/ %R 10.4064/sm176-3-4 %G en %F 10_4064_sm176_3_4