Encyclopedia of Social InnovationJürgen Howaldt, Christoph Kaletka · First published 2023Open the Tome
Research Agenda for Social InnovationJürgen Howaldt, Christoph Kaletka, Antonius Schröder · First published 2021Open the Tome
Soziale Innovationen lokal gestaltenHans-Werner Franz, Christoph Kaletka · First published 2018Open the Tome
