@book{Heisenberg2020,
author = {Heisenberg, August},
year = {2020},
language = {ger},
copyright = {https://creativecommons.org/public-domain/cc0/},
title = {Die Apostelkirche in Konstantinopel},
url = "http://dx.doi.org/10.17169/refubium-27797",
}