1. Product use survey;Christensen;Clinical Research Associates Newsletter,1995
2. Alternatives for Class 2 restorations;Christensen;Clinical Research Associates Newsletter,1994
3. Marginal fit of gold inlay castings;Christensen;J Prosthet Dent,1966
4. The practicability of compacted gold foils in general practice (a survey);Christensen;J Am Acad Gold Foil Oper,1971
5. Ceramic for crowns, veneers, inlays, onlays;Christensen;Clinical Research Associates Newsletter,1992