Buldygin, V., Kozachenko, Y., & Leonenko, N. N. (1992). On the papers of M.I. Yadrenko on the theory of random fields . Ukrains’kyi Matematychnyi Zhurnal, 44(11), 1460-1465. https://umj.imath.kiev.ua/index.php/umj/article/view/8246