%0 Journal Article %A O. V. Kravtsova %T Elementary abelian $2$-subgroups in an autotopism group of a semifield projective plane %J The Bulletin of Irkutsk State University. Series Mathematics %D 2020 %P 49-63 %V 32 %U http://geodesic.mathdoc.fr/item/IIGUM_2020_32_a3/ %G en %F IIGUM_2020_32_a3