@article{TIMM_2016_22_4_a25,
     author = {D. S. Telyakovskii},
     title = {A sufficient condition for the harmonicity of a function of two variables satisfying the {Laplace} difference equation},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {269--283},
     publisher = {mathdoc},
     volume = {22},
     number = {4},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2016_22_4_a25/}
}