Center for Industrial Mathematics, University of Bremen, 28359 Bremen, Germany.|Center for Industrial Mathematics, University of Bremen, 28359 Bremen, Germany.|Center for Industrial Mathematics, University of Bremen, 28359 Bremen, Germany.|Proteopath GmbH, 54296 Trier, Germany.|Proteopath GmbH, 54296 Trier, Germany.|Center for Industrial Mathematics, University of Bremen, 28359 Bremen, Germany.