@Book{Sommer1934,
author  = "Sommer, Ferdinand",
title   = "Aẖẖijavāfrage und Sprachwissenschaft",
year    = "1934",
address = "München",
series  = "Abhandlungen",
volume  = "N.F., 9",
url     = "https://publikationen.badw.de/en/006968346",
}