@book{1550416,
	author = {Konrad Bergmeister},
	title = {Beton-Kalender 2021 - Schwerpunkte - Fertigteile; Integrale Bauwerke (2 Teile)},
	publisher = {Wiley},
	url = {https://onlinelibrary.wiley.com/doi/book/10.1002/9783433610206}
}