@book{UBHD-1058891, author={Laxner-Gerlach, Uta}, organization={Museum Folkwang}, title={Katalog der Gem{\"a}lde des 20. Jahrhunderts}, address={Essen}, year={1971}, pages={143 S., XX, 57 Bl.}, language={ger}, library={UB [Signatur: 74 B 3230]}, }