@article{ZNSL_2016_447_a5,
     author = {A. N. Medvedev},
     title = {Comparison of boundary smoothness for an analytic function and for its modulus in the case of the upper half-plane},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {75--89},
     publisher = {mathdoc},
     volume = {447},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2016_447_a5/}
}