@article{SEMR_2017_14_a116,
     author = {V. V. Karachik},
     title = {Integral identities on a sphere for normal derivatives of polyharmonic functions},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {533--551},
     publisher = {mathdoc},
     volume = {14},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2017_14_a116/}
}