@article{10_2298_FIL2217913E,
     author = {Saad R El-Shabrawy},
     title = {Compactness criteria and spectra of some infinite lower triangular matrices},
     journal = {Filomat},
     pages = {5913 },
     year = {2022},
     volume = {36},
     number = {17},
     doi = {10.2298/FIL2217913E},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL2217913E/}
}