1. Active supervision of the eruption of the teeth by extraction;Hotz;Tr. European Orthodont. Soc.,1947
2. Serial extraction as a corrective procedure in dental orthopedic therapy;Kjellgren;Tr. European Orthodont. Soc.,1947
3. The dangers and pitfalls of serial extraction;Heath;Tr. European Orthodont. Soc.,1961
4. Bernard: Serial extraction as a treatment procedure;Lloyd;Am. J. Orthodontics,1956
5. A concept, a diagnosis, and a discipline;Mayne;D. Clin. North America,1959