Cheikh, Atig, and Siham Berkane. “Investment in Intellectual Property and Economic Freedom in the Context of Current Transformations: An Empirical Study of Algeria (2018–2023)”. The International Tax Journal, vol. 52, no. 5, Oct. 2025, pp. 2324-32, https://internationaltaxjournal.online/index.php/itj/article/view/242.