OHANYAN, V.K.; ADAMYAN, G.L. COVARIOGRAM OF A RIGHT PARALLELEPIPED. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 53, n. 2 (249), p. 101–108, 2019. DOI: 10.46991/PYSU:A/2019.53.2.101. Disponível em: https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol53_no2_2019_pp101-108. Acesso em: 17 may. 2024.