Rizvi, H., Sikder, M. and Hossain, M. (2013) “Orthodontic Treatment of Severe Crowding Malocclusion with Extraction of premolars”., Bangladesh Journal of Orthodontics and Dentofacial Orthopedics, 2(2), pp. 30–33. doi: 10.3329/bjodfo.v2i2.16161.