%0 Journal Article %A N. V. Maslova %A I. N. Belousov %A N. A. Minigulov %T Open questions formulated at the 13th School-Conference on Group Theory Dedicated to V. A. Belonogov's 85th Birthday %J Trudy Instituta matematiki i mehaniki %D 2020 %P 275-285 %V 26 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMM_2020_26_3_a22/ %G ru %F TIMM_2020_26_3_a22