@Book{Hirth1900,
author  = "Hirth, Friedrich",
title   = "Ueber Wolga-Hunnen und Hiung-nu",
year    = "1900",
address = "München",
series  = "Sitzungsberichte",
volume  = "1899,2,4",
url     = "https://publikationen.badw.de/de/007458441",
}