Nappe, C.E., A.B. Rezuc, A. Montecinos, F.A. Donoso, A.J. Vergara, and B. Martinez. “Histological Comparison of an Allograft, a Xenograft and Alloplastic Graft As Bone Substitute Materials”. Journal of Osseointegration 8, no. 2 (November 30, 2016): 20-26. Accessed September 23, 2020. https://www.journalofosseointegration.eu/index.php/jo/article/view/105.