%0 Journal Article %A F. Seyidova %T On the completeness and minimality of double and unitary systems in Morrey-type spaces %J Eurasian mathematical journal %D 2021 %P 74-81 %V 12 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/EMJ_2021_12_2_a7/ %G en %F EMJ_2021_12_2_a7