A. A.-R. Selman, “Particle-Hole State Density Calculations with Non-Equidistant Spacing Model: I. Basic Derivation”, IJP, vol. 8, no. 13, pp. 53–64, Dec. 2010, Accessed: Dec. 22, 2024. [Online]. Available: https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/828