R. Manikandan, R. Ranjani Devi, B. Pavithra, and S. Sarbeshwari. 2021. “On Equivalent Conditions of Quasi Quaternion Normal Bimatrices”. Malaya Journal of Matematik 9 (01). India:757-59. https://www.malayajournal.org/index.php/mjm/article/view/1153.