%0 Journal Article %A A. Nasli Bakir %A S. Mecheri %T $n$-Multiplicity and spectral properties for $(M, k)$-quasi-$*$-class $Q$ operators %J Eurasian mathematical journal %D 2023 %P 79-93 %V 14 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/EMJ_2023_14_2_a4/ %G en %F EMJ_2023_14_2_a4