Kozak, P.S., M.M. Luz, and M.P. Moklyachuk. “Minimax Prediction of Sequences With Periodically Stationary Increments”. Carpathian Mathematical Publications 13, no. 2 (August 18, 2021): 352–376. Accessed May 24, 2024. https://journals.pnu.edu.ua/index.php/cmp/article/view/3949.