%0 Journal Article %A Ya. V. Bazaikin %T Noncompact Riemannian Spaces with the Holonomy Group $\operatorname{Spin}(7)$ and 3-Sasakian Manifolds %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2008 %P 6-17 %V 263 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2008_263_a1/ %G ru %F TM_2008_263_a1