@article{10_2298_FIL2305377A,
     author = {Aymen Ammar and Fatima Zohra Boutaf and Aref Jeribi},
     title = {Extended eigenvalues of 2 {\texttimes} 2 block operator matrices},
     journal = {Filomat},
     pages = {1377 },
     year = {2023},
     volume = {37},
     number = {5},
     doi = {10.2298/FIL2305377A},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL2305377A/}
}