Heisser, Thomas [P:(DE-HGF)0] ; Sergeev, Dmitry [P:(DE-He78)772c4cbbab31f1b71f814e8ae9e0ed51] ; Hoffmeister, Michael [P:(DE-He78)6c5d058b7552d071a7fa4c5e943fff0f] ; Brenner, Hermann [P:(DE-He78)90d5535ff896e70eed81f4a4f6f22ae2]