@article{PPN517627655+dmdlog71, title = {130. Die logischen Grunds\"atze.}, booktitle = {Das Weltsystem Theil 2}, series = {GDML\_Books}, year = {1896}, pages = {283}, url = {http://dml.mathdoc.fr/item/PPN517627655+dmdlog71} }
(éd.). 130. Die logischen Grundsätze., dans Das Weltsystem Theil 2, GDML_Books, (1896), p. 283. http://gdmltest.u-ga.fr/item/PPN517627655+dmdlog71/