@article{JNSA_2016_9_12_a1,
     author = {Liu, Liya and Gu, Feng},
     title = {Common fixed point theorems for six self-maps in \(b\)-metric spaces with nonlinear contractive conditions },
     journal = {Journal of nonlinear sciences and its applications},
     pages = {5909-5930},
     publisher = {mathdoc},
     volume = {9},
     number = {12},
     year = {2016},
     doi = {10.22436/jnsa.009.12.02},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.22436/jnsa.009.12.02/}
}