1. 1. D Henderson, GP McGivney, and DJ Castleberry : McCracken's removable partial prosthodontics (ed 7 ). St Louis, MO, Mosby, 1985 , pp69 72 .
2. 2. AJ Krol : Removable partial denture design, outline syllabus (ed 3 ). San Francisco, CA, University of Pacific, School of Dentistry Bookstore, 1981 , pp28 30 .
3. Resin-bonded etched-metal rest seats
4. Etched castings as an adjunct to mouth preparation for removable partial dentures