@article{NUMA_1971__18_132117,
     author = {T. Pietrzykowski},
     title = {A {Generalization} of the {Potential} {Method} for {Conditional} {Maxima} on the {Banach,} {Reflexive} {Spaces.}},
     journal = {Numerische Mathematik},
     pages = {367--372},
     publisher = {mathdoc},
     volume = {18},
     year = {1971},
     zbl = {0282.65054},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1971__18_132117/}
}