@article{TIMM_2008_14_3_a8,
     author = {E. A. Zernyshkina},
     title = {The {Wirtinger--Steklov} inequality between the norm of a~periodic function and the norm of the positive cutoff of its derivative},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {99--111},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2008_14_3_a8/}
}