%0 Journal Article %A Stefan Ivković %T On non-adjointable semi-C*-Fredholm operators and semi-C*-Weyl operators %J Filomat %D 2023 %P 5523 %V 37 %N 17 %U http://geodesic.mathdoc.fr/articles/10.2298/FIL2317523I/ %R 10.2298/FIL2317523I %G en %F 10_2298_FIL2317523I