1. Reasons for placement and replacement of restorations of direct restorative materials by a selected group of practitioners in the United Kingdom;Wilson;Quintessence International,1997
2. Restoration longevity and analysis of reasons for the placement and replacement of restorations provided by vocational dental practitioners and their trainers in the United Kingdom;Burke;Quintessence International,1999
3. Placement and longevity of amalgam restorations in Denmark;Qvist;Acta Odontologica Scandinavica,1990
4. Placement and longevity of tooth-coloured restorations in Denmark;Qvist;Acta Odontologica Scandinavica,1990
5. The reasons for replacement and the age of failed restorations in general dental practice;Mjor;Acta Odontologica Scandinavica,1997