III. Die philosophische Mathematik.
Die Mathematik Theil 1, GDML_Books, (1895), p. 397 / Harvested from
Access to full text 
@article{PPN517627590+dmdlog72,
     title = {III. Die philosophische Mathematik.},
     booktitle = {Die Mathematik Theil 1},
     series = {GDML\_Books},
     year = {1895},
     pages = {397},
     url = {http://dml.mathdoc.fr/item/PPN517627590+dmdlog72}
}

 (éd.). III. Die philosophische Mathematik., dans Die Mathematik Theil 1, GDML_Books,  (1895), p. 397. http://gdmltest.u-ga.fr/item/PPN517627590+dmdlog72/