1. Late results of activator treatment; a cephalometric study;Ahlgren;Br. J. Orthod.,1976
2. Growth and maturation;Baer,1973
3. Psychologic care during infancy and childhood;Bakwin,1942
4. Some psychological aspects of thumbsucking;Bluemnau;Br. Dent. J.,1947
5. A longitudinal study of digital and dummy sucking;Bowden;Aust. Dent. J.,1966