de Almeida, J. C., Ângela R. Rego, J. V. Lino, J. Gameiro dos Santos, and C. Almeida e Sousa. “A Retrospective Comparative Study Between the Use of Micro-Drill Vs Perforator in the Fenestration of Stapes Footplate in the Surgical Treatment of Otosclerosis”. Portuguese Journal of Otorhinolaryngology and Head and Neck Surgery, vol. 56, no. 3, Mar. 2019, pp. 113-8, doi:10.34631/sporl.731.