1. A telescopic crown concept for the restoration of the partially edentulous arch: the Marburg double crown system;Wenz;Int J Prosthodont,1998
2. Clinical longevity of removable partial dentures retained by telescopic crowns: outcome of the double crown with clearance fit;Wenz;Int J Prosthodont,2001
3. Combinations of diverse retainers in removable partial dentures;Langer;J Prosthet Dent,1978
4. Telescope crown retainers for removable partial dentures;Isaacson;J Prosthet Dent,1969
5. Telescope retainers and their clinical application;Langer;J Prosthet Dent,1980