@article{articleacbbccec,
title   = {Comparative study of the Fränkel (FR-2) and bionator appliances in the treatment of Class II malocclusion},
author = {Almeida, Marcio Rodrigues de and Henriques, José Fernando Castanha and Ursi, Weber José da Silva},
year = {2002},
doi = {10.1067/mod.2002.123037},
journal   = {American Jornal of Orthodontics & Dentofacial Orthopedics}
}