@article{MZM_2011_90_1_a9,
     author = {Qiuying Li and Chuanxi Zhu},
     title = {The {Fixed-Point} {Index} of {Nonlinear} {Operators} in {Menger} {PN-Spaces}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {104--112},
     publisher = {mathdoc},
     volume = {90},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2011_90_1_a9/}
}