Vartolomei, A.-C., O. M. Gansca, and D. C. Serbanoiu. “Clinico-Statistical Study Concerning the Use of Classical Orthodontic Appliances Among Orthodontists”. European Scientific Journal, ESJ, Vol. 14, no. 27, Sept. 2018, p. 115, doi:10.19044/esj.2018.v14n27p115.