%0 Journal Article %A A. P. Shirokov %T Symmetric spaces defined by commutative algebras of the 4th order %J Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki %D 1966 %P 60-80 %V 126 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZKU_1966_126_1_a6/ %G ru %F UZKU_1966_126_1_a6