@article{SEMR_2021_18_2_a66,
     author = {A. S. Romanov},
     title = {Extremality of $p$-harmonic functions in $R^2$},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {1015--1022},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2021_18_2_a66/}
}