@article{SM_1998_189_12_a1,
     author = {V. I. Buslaev},
     title = {Poincar\'e's theorem and its applications  to the~convergence of continued fractions},
     journal = {Sbornik. Mathematics},
     pages = {1749--1764},
     publisher = {mathdoc},
     volume = {189},
     number = {12},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1998_189_12_a1/}
}