@Book{Voss1890,
author  = "Voss, Aurel",
title   = "Ueber die conjugirte Transformation einer bilinearen Form in sich selbst",
year    = "1890",
address = "München",
series  = "Sitzungsberichte",
volume  = "1889,11",
url     = "https://publikationen.badw.de/en/003392178",
}