БОБРИЦЬКА, Г. Aleksander Mikhailovich Lyapunovs (1857–1918) Kharkov Period Of Scientific And Educational Activities. Pedagogy of Higher and Secondary Education, Kryvyi Rih, Ukraine, v. 39, p. 290–295, 2013. DOI: 10.31812/educdim.v39i0.3073. Disponível em: https://journal.kdpu.edu.ua/ped/article/view/3073. Acesso em: 26 nov. 2024.