@article{YJOR_1998_8_2_a5,
     author = {Mila Stojakovi\'c and Ljiljana Gaji\'c},
     title = {Equivalents {Of} {The} {Variational} {Principle} {In} {Fuzzy} {And} {Probabilistic} {Metric} {Spaces}},
     journal = {Yugoslav journal of operations research},
     pages = {247 },
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {1998},
     zbl = {0946.54023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/YJOR_1998_8_2_a5/}
}