@article{VMUMM_2017_4_a9,
     author = {S. L. Berberian},
     title = {Refinement of the {Plessner} theorem and {Plessner} points for arbitrary harmonic functions},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {58--61},
     publisher = {mathdoc},
     number = {4},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2017_4_a9/}
}