@article{MZM_2008_83_6_a9,
     author = {E. B. Tomashevskaya},
     title = {Diophantine {Approximations} of the {Number~}$\pi$ by {Numbers} from the {Field} $\mathbb Q(\sqrt{3})$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {912--922},
     publisher = {mathdoc},
     volume = {83},
     number = {6},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2008_83_6_a9/}
}