%0 Journal Article %A F. G. Uskov %T On a Complete Basis in the Space of Rotationally Invariant Operators of $N$ Quantum Spins $1/2$ %J Informatics and Automation %D 2021 %P 280-284 %V 313 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_2021_313_a23/ %G ru %F TRSPY_2021_313_a23