%0 Journal Article %A Zagorodnyuk, Sergey %T On extensions of commuting tuples of symmetric and isometric operators %J Serdica Mathematical Journal %D 2020 %P 19-34 %V 46 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SMJ2_2020_46_1_a1/ %G en %F SMJ2_2020_46_1_a1