1.
Bushra Abdulbari Ahmed, Aymen Ajina. The Impact of Spending on Research and Development on the Global Patent Index for a Sample of Developed Countries for the Period 2007-2021 . Migrat. Lett. [Internet]. 2023Nov.4 [cited 2025Apr.10];20(S8):841-63. Available from: https://migrationletters.com/index.php/ml/article/view/4657