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by Lehmbruch, Gerhard
by Zielinski, Lech; Ludwig, Klaus-Dieter; Lipczuk, Ryszard
by Moskal, Anna
by H Felmann, Martin; Hofelmann, Martin
by Pollock, James K.; Krüger-Bulcke, Ingrid
by Hui-Ling Huang
by Zadoff, Noam
by Nath, Axel; Titze, Hartmut
by Heinrich, Torsten
by Wehage, Maximilian Lukas