@article{NUMA_1970__14_131956,
     author = {T. PIETRZYKOWSKI},
     title = {The {Potential} {Method} for {Conditional} {Maxima} in the {Locally} {Compact} {Metric} {Spaces.}},
     journal = {Numerische Mathematik},
     pages = {325--329},
     publisher = {mathdoc},
     volume = {14},
     year = {1970},
     zbl = {0195.46304},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1970__14_131956/}
}