%0 Journal Article %A Jiongmin Yong %T Optimal controls for distributed parameter systems with mixed constraints %J Colloquium Mathematicum %D 1990 %P 35-48 %V 60 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-60-61-1-35-48/ %R 10.4064/cm-60-61-1-35-48 %G en %F 10_4064_cm_60_61_1_35_48