%0 Journal Article %A Delver, Robert %T Boundary and Interior Control for Partial Differential Equations %J Canadian journal of mathematics %D 1975 %P 200-217 %V 27 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1975-025-6/ %R 10.4153/CJM-1975-025-6 %F 10_4153_CJM_1975_025_6