Kenney, B., and W. E. Carnio. “The Use of Periodontal Surgery to Enhance the Results of Restorative Dentistry”. Semina: Ciências Exatas E Tecnológicas, vol. 1, no. 4, Dec. 2004, pp. 47-52, doi:10.5433/1679-0375.1979v1n4p47.