Salim Dawood Mohsen. “Novel Results of K Quasi (ℷ-M)-Hyponormal Operator”. Iraqi Journal of Science 65, no. 1 (January 30, 2024): 374–380. Accessed July 8, 2026. https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/10488.