Boteva, E., and S. Yantscheva. “Apical Conical Size of the Root Lengths: An Anatomical Comparative Study of Significance to Minimally Invasive Endodontics”. Acta Medica Bulgarica 53, no. Suppl 1 (February 6, 2026): 30–35. Accessed February 7, 2026. https://journals.mu-sofia.bg/index.php/amb/article/view/345.