Kaķis, Roberts, Dagnija Blumberga, and Ģirts Vīgants. “Guidlines for Inventors ‘From Idea to product’”. International Conference “Environmental Engineering” 11 (February 4, 2020): 1–7. Accessed May 24, 2026. https://conferences.vilniustech.lt/index.php/ENVIRO/article/view/1259.