@article{PPN517627655+dmdlog107, title = {159. Die Hypothese.}, booktitle = {Das Weltsystem Theil 2}, series = {GDML\_Books}, year = {1896}, pages = {446}, url = {http://dml.mathdoc.fr/item/PPN517627655+dmdlog107} }
(éd.). 159. Die Hypothese., dans Das Weltsystem Theil 2, GDML_Books, (1896), p. 446. http://gdmltest.u-ga.fr/item/PPN517627655+dmdlog107/