@article{MZM_2011_90_4_a11,
     author = {G. A. Kalyabin},
     title = {Sharp {Constants} in {One-Dimensional} {Poincar\'e-Type} {Inequalities}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {634--636},
     publisher = {mathdoc},
     volume = {90},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2011_90_4_a11/}
}