ТКАЧ, Д. І. Systemacity of descriptive geometry as the basis of its fundamental nature. Pedagogy of Higher and Secondary Education, Kryvyi Rih, Ukraine, v. 47, p. 209–215, 2019. DOI: 10.31812/educdim.v47i0.2457. Disponível em: https://journal.kdpu.edu.ua/ped/article/view/2457. Acesso em: 23 dec. 2024.