@article{NSJOM_1987_17_1a_4,
     author = {Palczewski Boleslaw and Miczko Antoni},
     title = {Converses of generalized banach 

 contraction principles and remarks on mappings with a contractive iterate at 

 the point},
     journal = {Novi Sad Journal of Mathematics},
     pages = {71-91},
     year = {1987},
     volume = {17},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1987_17_1a_4/}
}