1) Egelberg, J.: Regeneration and repair of periodontal tissues. J. Periodont. Res., 22: 233-242, 1987.
2) Nyman, S., Lindhe, J., Karring, T. and Rylander, H.: New attachment following surgical treatment of human periodontal disease. J. Clin. Periodont., 9: 290-296, 1982.
3) Nyman, S., Lindhe, J., Karring, T.: Healing following surgical treatment and root demineralization in monkeys with periodontal disease. J. Clin. Periodontal., 8: 249-258, 1981.
4) Yaffe, A. and Shoshan, S.: Re-attachement of periodontal ligament by collagen in experimentally-induced alveolar bone dehiscence in dogs. Archs. oral Biol., 32: 69-73, 1987.
5) Caffesse, R. G., Nasjleti, C. E., Anderson, G. B., Lopatin, D. E., Smith, B. A. and Morrison, E. C.: Periodontal healing following guided tissue regeneration with citric acid and fibronectinapplication. J. Periodontol., 62: 21-29, 1991.