ALI, Siham; NURALDEEN, Abdallah. An Estimation Of Import Demand Function For Wheat In Libya (1980-2016) Empirical Study Using Simultaneous Integration With Thresholds (Co-Integration With Regime Shift ). Journal of Pure & Applied Sciences , [S. l.], v. 17, n. 3, p. 10–17, 2018. DOI: 10.51984/jopas.v17i3.281. Disponível em: https://www.sebhau.edu.ly/journal/jopas/article/view/281. Acesso em: 12 sep. 2026.