Hilmola, Olli-Pekka, and Ekku Heljanko. “Uncertain New Technologies – Economics of Ground Effect Vehicle Operator”. Business: Theory and Practice 26, no. 1 (March 25, 2025): 133–140. Accessed March 29, 2025. https://journals.vilniustech.lt/index.php/BTP/article/view/22454.