@article{NSJOM_1988_18_2a_12,
     author = {Had\v{z}i\'c Olga},
     title = {Common fixed point theorems for 

 single-valued and multivalued mappings},
     journal = {Novi Sad Journal of Mathematics},
     pages = {145-151},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1988},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1988_18_2a_12/}
}