@article{ZNSL_2017_456_a1,
     author = {A. O. Bagapsh},
     title = {On the radius of starlikeness for harmonic mappings},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {16--24},
     publisher = {mathdoc},
     volume = {456},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2017_456_a1/}
}