Scarano A, Piattelli M, Carinci F, Pernotti V.
Removal, after 7 years, of an implant displaced into the maxillary sinus. A clinical and histologic case report.
Journal of Osseointegration 2009; 1: 1-6.
http://www.journalofosseointegration.eu/bibliografia_dettaglio.asp?id=6