1. Conservative Treatment of Pyorrhea;Hirschfeld;J. Am. Dent. A.,1942
2. Conservative Treatment of Periodontoclasia;Leonard;J. Am. Dent. A.,1931
3. What Place Has Surgical Procedure in Periodontia?;Bettman;J. Periodontology,1944
4. Gingivectomy vs. Conservative Treatment of Periodontoclasia;Kirkland;New York J. Dent.,1942
5. The Surgical Eradication of Pyorrhea;Ward;J. Am. Dent. A.,1928