Al-Gafoor G. Al-Obeady, A., and A. Y. Suleman. “Using Markov Chains in Medical Field”. IRAQI JOURNAL OF STATISTICAL SCIENCES, vol. 15, no. 1, June 2025, pp. 107-20, https://rjps.uomosul.edu.iq/index.php/stats/article/view/20656.