1. Treatment of malocclusion of the teeth;Angle,1900
2. Diastema mediale och frenulum labii superioris;Bergström;Sven. Tandläk. Tidskr.,1962
3. The superior labial frenum and the midline diastema and their relation to growth and development of the oral structures;Ceremello;Am. J. Orthod.,1953
4. A survey of malocclusion and some aetiological factors in 1,000 Sheffield schoolchildren;Gardiner;Dent. Pract.,1956
5. Midline spaces;Gardiner;Dent. Pract.,1967