@article{AletseeBaumann1991, author = {Aletsee, Ludwig and Baumann, Marcus}, title = {A laboratory incubator equipped with facilities to automatically simulate natural irradiance}, series = {Boletim do Instituto Oceanogr{\´a}fico / Universidade de S{\~a}o Paulo}, volume = {Vol. 39}, journal = {Boletim do Instituto Oceanogr{\´a}fico / Universidade de S{\~a}o Paulo}, number = {No. 2}, issn = {1982-436X; 0080-6331}, pages = {155 -- 159}, year = {1991}, language = {en} } @book{OPUS4-1635, title = {Joseph Beuys : Natur, Materie, Form}, editor = {Zweite, Armin}, publisher = {Schirmer/Mosel}, address = {M{\"u}nchen [u.a.]}, isbn = {3-88814-453-1}, pages = {360 S. : {\"u}berw. Ill.}, year = {1991}, language = {de} }