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2. Studies in partial denture prosthesis. IV. Final results of a 4-year longitudinal investigation of dentogingivally supported partial dentures;Carlsson;Acta Odontol Scand,1965
3. Cobalt-chromium partial dentures. A clinical survey;Tomlin;Br Dent J,1961
4. A clinical survey of removable partial dentures after 2 years usage;Derry;Acta Odontol Scand,1970
5. A clinical study of patients 1 to 2 years after placement of removable partial dentures;Schwalm;J Prosthet Dent,1977