@Book{Voss1892,
author  = "Voss, Aurel",
title   = "Ueber die cogredienten Transformationen einer bilinearen Form in sich selbst",
year    = "1892",
address = "München",
series  = "Abhandlungen",
volume  = "Bd. 17, Abth. 2 = [5]",
url     = "https://publikationen.badw.de/de/003083051",
}