@article{TRSPY_1973_129_a1,
     author = {V. P. Orevkov},
     title = {The complexity of the expansion of algebraic irrationalities in continued fractions},
     journal = {Informatics and Automation},
     pages = {24--29},
     publisher = {mathdoc},
     volume = {129},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1973_129_a1/}
}