LUCHKA, A. Yu. On the defences theses for a Doctor’s degree at the specialized council at the institute of mathematics of the Ukr.SSR Academy of sciences in 1987—1988 . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 40, n. 5, p. 671–675, 1988. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8827. Acesso em: 5 dec. 2025.