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Michael Scholz and Detlef Wiedeke just Detlef Wiedeke. en At the left Michael Scholz Right Detlef Wiedeke From Systems in Blue MichaelScholzandDetlefWiedeke UTC Diego Grez Cropped just showing Detlef Wiedeke Diego Grez MichaelScholzandDetlefWiedeke own Diego Grez Syst Uploaded with derivativeFX Category Systems in Blue Images