Published in Arkiv för Zoologi, in 1920, in volume 12, pages 1-5

Published in Arkiv för Zoologi, in 1920, in volume 12, issue 20, pages 1-67

Published in Arkiv för Zoologi, in 1920, in volume 13, pages 1-44

Published in Arkiv for Zoologi, in 1920, in volume 13, issue 6, pages 1-32

Published in Arkiv för Zoologi, in 1920, in volume 13, issue 7, pages 1-7

Published in Arkiv för Zoologi, in 1920, in volume 13, issue 9, pages 1-43