%0 Journal Article %A Derek W. Robinson %A Adam Sikora %T $L_1$-uniqueness of degenerate elliptic operators %J Studia Mathematica %D 2011 %P 79-103 %V 203 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm203-1-5/ %R 10.4064/sm203-1-5 %G en %F 10_4064_sm203_1_5