Vocational Education and Training in the Age of DigitizationDirk Ifenthaler, Daniel Rugel, Thomas Lachmann, Christin Siegfried, Rico Hermkes · First published 2020Open the Tome
ZeitmanagementJörg Knoblauch, Holger Wöltje, Marcus B. Hausner, Martin Kimmich, Siegfried Lachmann · First published 2008Open the Tome
