%0 Journal Article %A Al-Mahameed, M. M. %T Extended Maximum Principles %J Serdica Mathematical Journal %D 2007 %P 351-362 %V 33 %N 2-3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SMJ2_2007_33_2-3_a7/ %G en %F SMJ2_2007_33_2-3_a7