@Book{GraetzFomm1895,
author  = "Graetz, Leo and Fomm, Ludwig",
title   = "Ueber normale und anomale Dispersion elektrischer Wellen",
year    = "1895",
address = "München",
series  = "Sitzungsberichte",
volume  = "1894,7",
url     = "https://publikationen.badw.de/en/003392713",
}