Konas leveår er fra gravferdsetaten i Oslo, sist lest den 18. august 2018.
doi.org
Tallaksen, Amund R. (2017). «Prelude to Preludin : Drug Use and the Norwegian Counterculture, 1961–1972». Contemporary Drug Problems. 44 (3): 176–188. doi:10.1177/0091450917718338.