Ackrill R, Çetin R. Imitation or Innovation? The impacts of patents and R&D expenditures on the high-tech exports of Newly Industrialised Countries. EI [Internet]. 2025 Mar. 1 [cited 2026 Aug. 25];30(1):45-6. Available from: http://www.economicissues.org.uk/index.php/EI_OJS/article/view/398