@article{FPM_2005_11_5_a3,
     author = {O. N. Biryukov},
     title = {A bound for the topological entropy of homeomorphisms of a~punctured two-dimensional disk},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {47--55},
     publisher = {mathdoc},
     volume = {11},
     number = {5},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2005_11_5_a3/}
}