@Book{PetzetHerbig1913,
author  = "Petzet, Erich and Herbig, Gustav",
title   = "Carl Wilhelm Ludwig Heyse und sein System der Sprachwissenschaft",
year    = "1913",
address = "München",
series  = "Sitzungsberichte",
volume  = "1913,7",
url     = "https://publikationen.badw.de/de/008932979",
}