TUG, Orhan. On The Spectrum of Norlund Type Matrix Operator . EURASIAN JOURNAL OF SCIENCE AND ENGINEERING, [S. l.], v. 9, n. 2, p. 195–207, 2023. DOI: 10.23918/eajse.v9i2p15. Disponível em: https://eajse.tiu.edu.iq/index.php/eajse/article/view/61. Acesso em: 18 apr. 2026.