§. 56. Die Tetraedergruppe
Lehrbuch der Algebra Bd. 2, GDML_Books, (1896), p. 212 / Harvested from
Access to full text 
@article{PPN234735015+dmdlog73,
     title = {\S . 56. Die Tetraedergruppe},
     booktitle = {Lehrbuch der Algebra Bd. 2},
     series = {GDML\_Books},
     year = {1896},
     pages = {212},
     url = {http://dml.mathdoc.fr/item/PPN234735015+dmdlog73}
}

 (éd.). §. 56. Die Tetraedergruppe, dans Lehrbuch der Algebra Bd. 2, GDML_Books,  (1896), p. 212. http://gdmltest.u-ga.fr/item/PPN234735015+dmdlog73/