Totino, M., A. Riccio, M. Leo, L. Arcuri, L. Cerroni, G. Pasquantonio, and R. Condò. “Aesthetic Orthodontic Archwires: The State of Art”. Oral & Implantology, vol. 7, no. 4, Dec. 2014, pp. 115-22, https://www.oimplantology.org/oimp/article/view/122.