Sensors structures and regional exponential detectability. - Raheam Al-Saphory (ECC, 2001)

Asymptotic regional state reconstruction. - Raheam Al-Saphory; Abdelhaq El Jai (Int. J. Syst. Sci., 2002)

Sufficient Conditions for Observability in Electrocardiography Problem. - Raheam Al-Saphory (CoRR, 2020)