“The Magnetic Susceptibility at The Transition Points Between The Ordered Phases of The Mixed Spin-2 and Spin-7 2 Ferrimagnetic System ”. Journal of Marine Sciences and Environmental Technologies 2, no. 2 (December 31, 2016): A 45–68. Accessed May 21, 2026. https://journals.asmarya.edu.ly/jmset/index.php/JMSET/article/view/106.