OKPE, Felix O. The definition of investment and the ICSID convention: matters arising under the Nigerian investment promotion act and international investment law. Journal of Sustainable Development Law and Policy, [S. l.], v. 8, n. 2, p. 133–154, 2017. Disponível em: https://jsdlp.ogeesinstitute.edu.ng/jsdlp/article/view/124. Acesso em: 23 mar. 2026.