@article{DM_1999_11_4_a13,
     author = {E. P. Machikina and B. Ya. Ryabko},
     title = {A fast method for transforming continued fractions into ordinary fractions},
     journal = {Diskretnaya Matematika},
     pages = {152--156},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1999_11_4_a13/}
}