Published in Archiv für Naturgeschichte. Berlin, in 1919, in volume 83, pages 85-178

Published in Archiv für Naturgeschichte. Berlin, in 1919, in volume 83, pages 141-143

Published in Archiv für Naturgeschichte, in 1919, in volume 83, issue 11, pages 95-122

Published in Archiv für Naturgeschichte. Berlin, in 1919, in volume 85, pages 243-276