@Book{Haushofer1882,
author  = "Haushofer, Karl",
title   = "Die Krystallform der Borsäure (H3 BO3)",
year    = "1882",
address = "München",
series  = "Sitzungsberichte",
volume  = "1882,26",
url     = "https://publikationen.badw.de/en/003394718",
}