Mackus, Austris, Andris Snipkis, Inta Znotiņa, and Ieva Jurāne. “Website ‘Technical Drawing’ for Development of Spatial and Constructive Thinking”. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 4 (May 18, 2015): 450–456. Accessed March 11, 2026. https://archive-journals.rtu.lv/sie/article/view/1205.