ELAF SABAH ABDULWAHID RIJAB. Triple Operators of Order n on a Hilbert Space. Tikrit Journal of Pure Science, [S. l.], v. 23, n. 3, p. 151–153, 2018. DOI: 10.25130/tjps.v23i3.512. Disponível em: https://tjps.tu.edu.iq/index.php/tjps/article/view/512. Acesso em: 18 may. 2024.