@article{PIM_1975_N_S_19_33_a6,
     author = {Lj. B. \'Ciri\'c},
     title = {On {Fixed} {Point} {Theorems} {In} {Banach} {Spaces}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {43 },
     publisher = {mathdoc},
     volume = {_N_S_19},
     number = {33},
     year = {1975},
     url = {http://geodesic.mathdoc.fr/item/PIM_1975_N_S_19_33_a6/}
}