Allen E P, Bayne S C, Brodine A H, Cronin R J, Donovan T E, Kois J C, Summitt J B
Department of Periodontics, Baylor College of Dentistry, Member of The Texas A&M University System, Dallas, Texas, USA.
J Prosthet Dent. 2001 Jul;86(1):33-56. doi: 10.1067/mpr.2001.116232.