%0 Journal Article %A Andi Kivinukk %A Anna Ĺ eletskia %T On the Steklov averages in operator cosine function framework %J Filomat %D 2023 %P 1635 %V 37 %N 5 %U http://geodesic.mathdoc.fr/articles/10.2298/FIL2305635K/ %R 10.2298/FIL2305635K %G en %F 10_2298_FIL2305635K