@article{NSJOM_1978_8_Nonea_2,
     author = {Had\v{z}i\'c Olga},
     title = {Some fixed point 

 theorems in {Banach} spaces},
     journal = {Novi Sad Journal of Mathematics},
     pages = {13-19},
     publisher = {mathdoc},
     volume = {8},
     year = {1978},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1978_8_Nonea_2/}
}