@Book{Weber1895,
author  = "Weber, Eduard von",
title   = "Ueber gewisse Systeme Pfaff'scher Gleichungen",
year    = "1895",
address = "München",
series  = "Sitzungsberichte",
volume  = "1895,19",
url     = "https://publikationen.badw.de/de/003391831",
}