@article{articlea2437007,
title   = {Maxillary expander with differential opening vs hyrax expander: a randomized clinical trial},
author = {Alves, Arthur César de Medeiros and Janson, Guilherme and Mcnamara, James A. and Lauris, José Roberto Pereira and Garib, Daniela Gamba},
year = {2020},
doi = {10.1016/j.ajodo.2019.07.010},
journal   = {American Journal of Orthodontics and Dentofacial Orthopedics}
}