Gersdorff, M., Maisin, JP., & Munting, E. (1986). Comparative-study of the Clinical-results Obtained By Means of Plastipore and Ceramic Ossicular Prosthesis and Bone Allografts. American Journal of Otology, 7(4), 294-297. https://doi.org/10.1016/S0196-0709(86)80051-5 (Original work published 1986)