@article{NSJOM_1986_16_1a_1,
     author = {Had\v{z}i\'c 

 Olga and Gaji\'c Ljiljana},
     title = {Coincidence 

 points for set-valued mappings in convex metric spaces},
     journal = {Novi Sad Journal of Mathematics},
     pages = {13-25},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {1986},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1986_16_1a_1/}
}