Adhamova Oltinoy Rafiqjon’s Qizi. “General Concepts of "Achromatic", "Chromatic", "Primary", "Brick" and ‘Additional’ Colors in Visual Arts”. Zeta Repository 19 (April 10, 2023): 26–30. Accessed April 12, 2025. https://zetarepo.com/index.php/zr/article/view/1650.