Sadybekov, M.A. “In Memory of the Talented Mathematician, Our Comrade and Friend Krasnov Yakov Alexandrovich (1951–2023)”. Bulletin of the Karaganda University. Mathematics Series, vol. 110, no. 2, June 2023, pp. 179-81, http://mts.buketov.edu.kz/index.php/mathematics-vestnik/article/view/597.