Bahije L, Ennaji A, Benyahia H, Zaoui F (September 2018). "A systematic review of orthodontic retention systems: The verdict". International Orthodontics. 16 (3): 409–424. doi:10.1016/j.ortho.2018.06.023. PMID30001980. S2CID51618389.
Bahije L, Ennaji A, Benyahia H, Zaoui F (September 2018). "A systematic review of orthodontic retention systems: The verdict". International Orthodontics. 16 (3): 409–424. doi:10.1016/j.ortho.2018.06.023. PMID30001980. S2CID51618389.
Bahije L, Ennaji A, Benyahia H, Zaoui F (September 2018). "A systematic review of orthodontic retention systems: The verdict". International Orthodontics. 16 (3): 409–424. doi:10.1016/j.ortho.2018.06.023. PMID30001980. S2CID51618389.