Zitzmann, Nicola Ursula; Hagmann, Edgar; Weiger, Roland (2007). "What is the prevalence of various types of prosthetic dental restorations in Europe?". Clinical Oral Implants Research. 18: 20–33. doi:10.1111/j.1600-0501.2007.01435.x. PMID17594367.
Jacobson, TE; Krol, AJ (1983). "A contemporary review of the factors involved in complete denture retention, stability, and support. Part I: retention". The Journal of Prosthetic Dentistry. 49 (1): 5–15. doi:10.1016/0022-3913(83)90228-7. PMID6337253.
Zitzmann, Nicola Ursula; Hagmann, Edgar; Weiger, Roland (2007). "What is the prevalence of various types of prosthetic dental restorations in Europe?". Clinical Oral Implants Research. 18: 20–33. doi:10.1111/j.1600-0501.2007.01435.x. PMID17594367.
Jacobson, TE; Krol, AJ (1983). "A contemporary review of the factors involved in complete denture retention, stability, and support. Part I: retention". The Journal of Prosthetic Dentistry. 49 (1): 5–15. doi:10.1016/0022-3913(83)90228-7. PMID6337253.