1. Über das Schicksal der nicht spezifisch behandelten Luetiker;Bruusgaard;Arch. f. Dermat. u. Syph,1929
2. Gjestland, T.: The Oslo Study of Untreated Syphilis-An epidemiologic investigation of the natural course of untreated syphilis based on a restudy of the BoeckBruusgaard material. Submitted to Acta Dermato-Venereologica, for publication as a Supplement in 1955.
3. Modern Clinical Syphilology;Stokes,1944
4. Gjestland, T., Heen, R. and Trier, G.: A Regional Investigation of the Mortality in the City of Oslo during the Period 1890-1940 (to be printed).