@Book{Fischer1882,
author  = "Fischer, Emil",
title   = "Umwandlung des Xanthins in Theobromin und Caffein",
year    = "1882",
address = "München",
series  = "Sitzungsberichte",
volume  = "1882,13",
url     = "https://publikationen.badw.de/en/003394694",
}