C. Besondere Probleme
Gesammelte Abhandlungen Bd. 3, GDML_Books, (1935), p. 135 / Harvested from
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     title = {C. Besondere Probleme},
     booktitle = {Gesammelte Abhandlungen Bd. 3},
     series = {GDML\_Books},
     year = {1935},
     pages = {135},
     url = {http://dml.mathdoc.fr/item/PPN237834022+dmdlog35}
}

 (éd.). C. Besondere Probleme, dans Gesammelte Abhandlungen Bd. 3, GDML_Books,  (1935), p. 135. http://gdmltest.u-ga.fr/item/PPN237834022+dmdlog35/