@article{NSJOM_2014_44_1a_14,
     author = {Mohammad Imdad, and Anupam Sharma, and Sunny Chauhan},
     title = {Some common fixed point theorems in metric spaces under

 a different set of conditions},
     journal = {Novi Sad Journal of Mathematics},
     pages = {183-199},
     publisher = {mathdoc},
     volume = {44},
     number = {1},
     year = {2014},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2014_44_1a_14/}
}