1. Comparison of Alastik chains with elastics involved with intra-arch molar to molar forces;Andreason;Angle Orthod.,1970
2. A comparison of time related forces between plastic Alastiks and latex elastics;Andreasen;Angle Orthod.,1970
3. Force in orthodontics and its relation to tooth movement;Storey;Aust. J. Dent.,1952
4. Some factors determining the evaluation of forces in orthodontics;Reitan;Am. J. Orthod.,1957
5. Begg orthodontic theory and technique;Begg,1965