Muraeh Atheab, Nidaa, and Salim Dawood Mohsen. “Some Properties Of* - Quasihyponormal Operators”. International Journal of Psychosocial Rehabilitation 24, no. 5 (July 31, 2020): 3962–3970. Accessed July 22, 2025. https://www.psychosocial.com/index.php/ijpr/article/view/5119.