1. Occlusion. Observation on its development from infancy to old age;Freil;Int J Orthodont,1927
2. Fundamental principles in the correction of occlusal disharmony, natural and artificial;Schuyler;J Am Dent Assoc,1935
3. Occlusion;Ramfjord,1971
4. Occlusal morphology considerations for fixed restorations;Lundeen;Dent Clin North Am,1971
5. Nature of contacts in centric occlusion in 32 adults;Anderson;J Dent Res,1971