@article{IVM_2003_3_a2,
     author = {E. Yu. Leonchik},
     title = {An estimate for the local smoothness of singular integrals},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {20--30},
     publisher = {mathdoc},
     number = {3},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2003_3_a2/}
}