Pasaribu, Suhendri, Saib Suwilo, and Herman Mawengkang. “Analysis of Rainfall Transition Probability Using Markov Chain Method”. Journal of Research in Mathematics Trends and Technology 7, no. 2 (September 19, 2025): 60–64. Accessed October 5, 2025. https://talenta.usu.ac.id/jormtt/article/view/21719.