Brizga, Janis, Harri Moora, and Ojārs Balcers. “DEPOSIT REFUND SYSTEM FOR BEVERAGE CONTAINERS IN LATVIA: LEARNINGS WITHIN THE BALTIC STATES”. SOCIETY. TECHNOLOGY. SOLUTIONS. Proceedings of the International Scientific Conference 1 (April 17, 2019): 21. Accessed June 29, 2025. https://journals.va.lv/index.php/STS/article/view/17.