Troedhan, Angelo, Andreas Kurrek, and Marcel Wainwright. 2012. “Vertical Alveolar Crest Split and Widening – an Experimental Study on Cow Ribs, Ultrasonic Tool Development and Test on Human Cadaver Heads”. Surgical Techniques Development 2 (1):e10. https://doi.org/10.4081/std.2012.e10.