TY - JOUR AU - Stefan Ivković TI - On non-adjointable semi-C*-Fredholm operators and semi-C*-Weyl operators JO - Filomat PY - 2023 SP - 5523 VL - 37 IS - 17 UR - http://geodesic.mathdoc.fr/articles/10.2298/FIL2317523I/ DO - 10.2298/FIL2317523I LA - en ID - 10_2298_FIL2317523I ER -