§ 20. Die Theta-Funktion
Lehrbuch der Algebra Bd. 3, GDML_Books, (1908), p. 69 / Harvested from
Access to full text 
@article{PPN234736674+dmdlog30,
     title = {\S\ 20. Die Theta-Funktion},
     booktitle = {Lehrbuch der Algebra Bd. 3},
     series = {GDML\_Books},
     year = {1908},
     pages = {69},
     url = {http://dml.mathdoc.fr/item/PPN234736674+dmdlog30}
}

 (éd.). § 20. Die Theta-Funktion, dans Lehrbuch der Algebra Bd. 3, GDML_Books,  (1908), p. 69. http://gdmltest.u-ga.fr/item/PPN234736674+dmdlog30/