@article{AA_2008_20_3_a8,
     author = {Yu. B. Farforovskaya and L. Nikolskaya},
     title = {Modulus of continuity of operator functions},
     journal = {Algebra i analiz},
     pages = {224--242},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AA_2008_20_3_a8/}
}