et. al., A. alsatar K. M. “Estimation Pre-Equilibrium Particle and Angular Distribution Spectra for the Neutrons Induce Nuclear Reactions on 90Zr Nuclei by Using (FKK) Model”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 5, Apr. 2021, pp. 2001-8, https://turcomat.org/index.php/turkbilmat/article/view/2288.