1. The superior labial frenum: a histologic observation;Gartner;Quintessence Int,1991
2. Histologic survey of the frena of the oral cavity;Ross;Quintessence Int,1990
3. Excision of the abnormal frenum;Bresslin;J Can Dent Assoc,1949
4. The diastema and the abnormal frenum;Fischer;ASDC J Dent Child,1981