Asad, Arif Ibne, and Lubor Homolka. “Investing in Innovation: The Relationship Between R&D Spending and Financial Performance in the European Pharmaceutical Industry”. Journal of Eastern European and Central Asian Research (JEECAR) 10, no. 7 (December 3, 2023): 1006–1026. Accessed May 20, 2024. https://ieeca.org/journal/index.php/JEECAR/article/view/1368.