Lopez , M. A., S. Lico, M. Casale, Z. Ormanier, and F. Carinci. “The Use of Various Biomaterials in Computer-Guided Crestal Sinus Lift Procedures. A Report on Two Case Studies With Volume Comparison”. Oral & Implantology, vol. 9, no. 2, June 2016, pp. 89-97, https://www.oimplantology.org/oimp/article/view/150.