@article{AA_2013_25_3_a1,
     author = {A. V. Vasin and S. V. Kislyakov and A. N. Medvedev},
     title = {Local smoothness of an analytic function compared to the smoothness of its modulus},
     journal = {Algebra i analiz},
     pages = {52--85},
     publisher = {mathdoc},
     volume = {25},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2013_25_3_a1/}
}