@article{MV_1978_30_1_a39,
     author = {J. Achari},
     title = {Fixed point theorems for family of  {\'Ciri\'c} quasi-contraction mappings},
     journal = {Matemati\v{c}ki vesnik},
     pages = {307 },
     year = {1978},
     volume = {30},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/MV_1978_30_1_a39/}
}