@article{NUMA_1985__46_133005,
     author = {Peter Knabner},
     title = {Control of {Stefan} {Problems} by {Means} of {Linear-Quadratic} {Defect} {Minimization.}},
     journal = {Numerische Mathematik},
     pages = {429--442},
     publisher = {mathdoc},
     volume = {46},
     year = {1985},
     zbl = {0568.65085},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1985__46_133005/}
}