%0 Journal Article %A A. A. Pakharev %A M. B. Skopenkov %T Surfaces containing two circles through each point and decomposition of quaternionic matrices %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2017 %P 381-383 %V 72 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_2017_72_2_a5/ %G en %F RM_2017_72_2_a5