1. The theoretical concept underlying the treatment with functional correctors;Fränkel;Trans. Eur. Orthod. Soc.,1966
2. Funktionskieferorthopädie und der Mundvorhof als Apparative Basis;Fränkel,1967
3. The practical meaning of the functional matrix in orthodontics;Fränkel;Trans. Eur. Orthod. Soc.,1969
4. The treatment of Class II, Division 1 malocclusion with functional correctors;Fränkel;Am. J. Orthod.,1969
5. Guidance of eruption without extraction;Fränkel;Trans. Eur. Orthod. Soc.,1971