1. The resiliency of the edentulous alveolar ridges;Arstad;Odont. Tid.,1959
2. Reduction of residual ridges: A major oral disease;Atwood;J. Prosthet. Dent.,1971
3. Baker, A.: Vertical base movement and occlusal force on a mandibular free-end partial denture. Thesis, University of Michigan, 1976.
4. An Approach to Dental Prosthetics;Berry,1964
5. Indications and contraindications for precision attachments;Cunningham;DENT. CLIN. NORTH AM.,1970