@book{Pjatnickij2019,
author = {Pjatnickij, Osip Aronovič},
year = {2019},
language = {ger},
copyright = {https://creativecommons.org/public-domain/cc0/},
title = {Die Kommunistischen Parteien in Aktion},
url = "http://dx.doi.org/10.17169/refubium-2382",
}