Angelova, Assia Ludmilova [P:(DE-He78)34bd069ab74ead9ac824c1e0896ecbf0] ; Rommelaere, Jean [P:(DE-He78)2d7958ea507b0b738619074b38ec6d54] ; Ungerechts, Guy [P:(DE-He78)833f90e2abdd29594ad5c4f08600f191]