TY - JFULL AU - Dipl.-Wirtsch.-Ing. Ralph Appel AU - Dr.-Ing. Volker Kefer JF - VDI nachrichten DO - 10.51202/0042-1758-2020-48 IS - 48 LA - de PY - 2020 UR - https://doi.org/10.51202/0042-1758-2020-48 VL - 74 Y2 - 28.03.2024 ER -