1. Direct tooth addition to an existing removable partial denture;Kazanoglu;Quintessence Int,1987
2. Removable partial prosthodontics;Miller,1979
3. McCracken's removable partial prosthodontics;Henderson,1985
4. Use of existing pontics to maintain esthetics with a transition prosthesis: a clinical report;Chee;J Prosthet Dent,1993