1. A cephalometric comparison between Class II, Division 2 malocclusion and normal occlusion;Codiawala;Angle Orthod.,1974
2. Features of upper central incisors in Class II, Division 2;Robertson;Angle Orthod.,1965
3. Morphology of the lips in relation to the incisor teeth: A preliminary report;Nicol;Trans. Br. Soc. Study Orthod.,1954
4. Tooth form and overbite;Backlund;Trans. Eur. Orthod. Soc.,1960