by Pascale, D, Gordon, J, Lamster, I, Mann, P, Seiger, M, Arndt, W
Published in Journal of clinical periodontology (01.10.1986)

by Gordon, Jeffrey, Walker, Clay, Lamster, Ira, West, Theodore, Socransky, Sigmund, Seiger, Mia, Fasciano, Robert
Published in Journal of periodontology (1970) (01.11.1985)