@article{NUMA_1982__39_132806,
     author = {G. Opfer},
     title = {Solving {Complex} {Approximation} {Problems} by {Semiinfmite} - {Finite} {Optimization} {Techniques} : {A} {Study} on {Convergence.}},
     journal = {Numerische Mathematik},
     pages = {411--420},
     publisher = {mathdoc},
     volume = {39},
     year = {1982},
     zbl = {0517.65005},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1982__39_132806/}
}