Luzhetskyi, Volodymyr, Volodymyr Mykhailevych, Olexiy Mykhailevych, and Valentyna Kaplun. 2015. “EVALUATION OF NUMBER OF THE UNIQUE LINEAR RECURRENT SEQUENCES OF THE SECOND ORDER”. Scientific Works of Vinnytsia National Technical University, no. 2 (November). https://works.vntu.edu.ua/index.php/works/article/view/280.