@article{VMUMM_2013_2_a12,
     author = {S. L. Berberian},
     title = {Boundedness of normal harmonic functions},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {57--61},
     year = {2013},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2013_2_a12/}
}