@article{NUMA_1989__54_3_133330,
     author = {Michael Kr\"atzschmar},
     title = {A {Decomposition-Dualization} {Approach} for {Solving} {Constraint} {Convex} {Minimization} {Problems} with {Applications} to {Discretized} {Obstacle} {Problems.}},
     journal = {Numerische Mathematik},
     pages = {507--532},
     publisher = {mathdoc},
     volume = {54},
     number = {3},
     year = {1989},
     zbl = {0661.65060},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1989__54_3_133330/}
}