ІРЗА, В. The experience of organization of research work at Ukrainian secondary schools in the second half of the twentieth century. Educational Dimension, Kryvyi Rih, Ukraine, v. 41, p. 303–308, 2014. DOI: 10.31812/educdim.v41i0.2924. Disponível em: https://journal.kdpu.edu.ua/ped/article/view/2924. Acesso em: 22 jul. 2024.