@article{MZM_2008_83_1_a1,
     author = {V. A. Voblyi},
     title = {Simplification of {Formulas} for the {Number} of {Maps} on {Surfaces}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {14--23},
     publisher = {mathdoc},
     volume = {83},
     number = {1},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2008_83_1_a1/}
}