@article{IVM_2007_2_a4,
     author = {G. S. Ragimkhanova and A.-R. K. Ramazanov},
     title = {Interpolation chain fraction and two extremal problems on rational approximations to $|x|$},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {35--45},
     publisher = {mathdoc},
     number = {2},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2007_2_a4/}
}