ЧОРНА, Н. О. METHODS OF ACCOUNT OPTICAL AND GEOMETRICAL PARAMETERS OF GELIOCONCENTRATORS. Lighting Engineering & Power Engineering, [S. l.], n. 2, p. 43–49, 2013. Disponível em: https://lepe.kname.edu.ua/index.php/lepe/article/view/50. Acesso em: 7 feb. 2025.