Rudolph, ThomasThomasRudolphKleinlercher, KristinaKristinaKleinlercherKralle, Nora CharlotteNora CharlotteKralle2023-04-132023-04-132021https://www.alexandria.unisg.ch/handle/20.500.14171/111261deOmni-Channel Management 2021book