An overview of the series “Konfirmandenarbeit erforschen und gestalten” (with books in German and English) published by Gütersloher Verlagshaus can be found here.
English publications from 2022 onwards are listed below – however, the list does not claim to be complete.
2022
Ilg, Wolfgang/ Schweitzer, Friedrich/ Simojoki, Henrik (2022): International Cooperative Research: Experiences and Insights from the Project on Confirmation Work in Europe. In International Journal of Practical Theology (IJPT) 26(1), 155-178, online: https://doi.org/10.1515/ijpt-2022-0014