@article{EMJ_2012_3_2_a5,
     author = {M. S. Khan and K. P. R. Rao and K. R. K. Rao},
     title = {Some fixed point theorems in symmetric $G$-cone metric spaces},
     journal = {Eurasian mathematical journal},
     pages = {85--93},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2012_3_2_a5/}
}