@article{10_4064_ba52_4_7,
     author = {Szymon G{\l}\k{a}b},
     title = {On the {Converse} of {Caristi's} {Fixed} {Point} {Theorem}},
     journal = {Bulletin of the Polish Academy of Sciences. Mathematics},
     pages = {411--416},
     publisher = {mathdoc},
     volume = {52},
     number = {4},
     year = {2004},
     doi = {10.4064/ba52-4-7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ba52-4-7/}
}