@article{MZM_1999_66_4_a4,
     author = {A. L. Lukashov},
     title = {A~Bernstein-type inequality for derivatives of rational functions on two segments},
     journal = {Matemati\v{c}eskie zametki},
     pages = {508--514},
     publisher = {mathdoc},
     volume = {66},
     number = {4},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1999_66_4_a4/}
}