@book{PPN588632678, title = {Bin\"are Formen Bd. 2}, series = {GDML\_Books}, publisher = {Teubner}, address = {Leipzig}, year = {1887}, language = {de}, url = {http://dml.mathdoc.fr/item/PPN588632678} }
Gordan, Paul Albert. Binäre Formen Bd. 2. GDML_Books (1887), http://gdmltest.u-ga.fr/item/PPN588632678/