@article{10_14708_cm_v20i2_5914,
     author = {L. Pasicki},
     title = {A short proof of the {Caristi} theorem},
     journal = {Commentationes Mathematicae},
     pages = { 427--428},
     year = {1978},
     volume = {20},
     number = {2},
     doi = {10.14708/cm.v20i2.5914},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v20i2.5914/}
}