1. Some remarks on the proper design of the semilunar lines of Douglas. With three illustrations;Retzius;Edinb Med J,1858
2. Myklebust JP. KI Under Pressure to Address Dark Side of Its History. University World News. https://www.universityworldnews.com/post.php?story=20210724111745127
3. A glance at the present state of ethnology, with reference to the form of the skull;Retzius;Br Foreign Med Chir Rev,1860
4. Regeneration: racial science, eugenics and the emergence of nordicism;Forssling,2020
5. The origin of the long-skulled germanic race;Kyllingstad,2014