R. Pontoriero; J. Lindhe; S. Nyman; T. Karring; E. Rosenberg; F. Sanavi (1988). Guided tissue regeneration in degree II furcation-involved mandibular molars : A clinical study. , 15(4), 247–254.
doi:10.1111/j.1600-051x.1988.tb01578.x
url to share this paper:
An interview with Sci-Hub Founder Alexandra Elbakyan Who exactly should pay for academic research