@article{TRSPY_2003_240_a4,
     author = {A. A. Borisov and V. V. Shokurov},
     title = {Directional {Rational} {Approximations} with {Some} {Applications} to {Algebraic} {Geometry}},
     journal = {Informatics and Automation},
     pages = {73--81},
     publisher = {mathdoc},
     volume = {240},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2003_240_a4/}
}