@article{ZNSL_2000_270_a14,
     author = {M. M. Roginskaya},
     title = {Asymptotical properties of harmonic and $M$-harmonic functions near the boundary of the unit sphere},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {309--316},
     publisher = {mathdoc},
     volume = {270},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2000_270_a14/}
}