@article{10_4064_fm194_1_5,
     author = {Alexey Ostrovsky},
     title = {Finite-to-one continuous $s$-covering mappings},
     journal = {Fundamenta Mathematicae},
     pages = {89--93},
     publisher = {mathdoc},
     volume = {194},
     number = {1},
     year = {2007},
     doi = {10.4064/fm194-1-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm194-1-5/}
}