@article{MZM_2003_74_2_a12,
     author = {V. V. Kozlov and T. V. Madsen},
     title = {Poincar\'e {Rotation} {Numbers} and the {Riesz} and {Voronoi} {Means}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {314--315},
     publisher = {mathdoc},
     volume = {74},
     number = {2},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2003_74_2_a12/}
}