1. Reduction of dental caries through use of a sodium fluoride mouthwash;Weisz;JADA,1960
2. Mouthwash with sodium fluoride and potassium fluoride;Torell;Odontol Revy,1962
3. Two-year clinical tests with different methods of local caries-preventive fluorine application in Swedish schoolchildren;Torell;Acta Odontol Scand,1965
4. Effect of sodium fluoride in dentifrice and mouthwash on incidence of dental caries in schoolchildren;Koch;Odontol Revy,1967
5. Annual report of the first dental officer of Vasterhotten County 1969;Hagglund,1974