§. 18. Permutationen von n Elementen
Lehrbuch der Algebra Bd. 1, GDML_Books, (1895), p. 64 / Harvested from
Access to full text 
@article{PPN234729163+dmdlog29,
     title = {\S . 18. Permutationen von n Elementen},
     booktitle = {Lehrbuch der Algebra Bd. 1},
     series = {GDML\_Books},
     year = {1895},
     pages = {64},
     url = {http://dml.mathdoc.fr/item/PPN234729163+dmdlog29}
}

 (éd.). §. 18. Permutationen von n Elementen, dans Lehrbuch der Algebra Bd. 1, GDML_Books,  (1895), p. 64. http://gdmltest.u-ga.fr/item/PPN234729163+dmdlog29/