1. P. Bonesvoll, P. Lokken, and G. Rolla, 1972 . The retention of14C-chlorhexidine in the human oral cavity after mouthrinses . I.A.D.R., Scand. Div. Malmo, Sweden1972, Abstr. no36 .
2. L. Flotra, K. Poppe, P. Gjermo, and G. Rolla, 1971 . A method for oral hygiene in handicapped populations . I.A.D.R. 49 Gen. Meet. Chicago1971. Abstr. no. 282, p.123 .