@article{SEMR_2022_19_1_a29, author = {E. G. Prilepkina and A. S. Afanaseva-Grigoreva}, title = {Optimal discrete {Neumann} energy in a ball and an annulus}, journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a}, pages = {109--119}, publisher = {mathdoc}, volume = {19}, number = {1}, year = {2022}, language = {en}, url = {http://geodesic.mathdoc.fr/item/SEMR_2022_19_1_a29/} }