@article{MV_1976_28_2_a24,
     author = {T. K. Pal and M. Maiti and J. Achari},
     title = {Extensions of  {\'Ciri\'c} generalised contractions},
     journal = {Matemati\v{c}ki vesnik},
     pages = {313 },
     year = {1976},
     volume = {28},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/MV_1976_28_2_a24/}
}