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 . Migration Letters, London, UK, v. 20, n. S8, p. 841–863, 2023. DOI: 10.59670/ml.v20iS8.4657. Disponível em: https://migrationletters.com/index.php/ml/article/view/4657. Acesso em: 22 jul. 2024.