See the Call for Papers here [pdf].
Deadline for submission is December 15, 2018.
Klaus Viertbauer is co-editor (with Franz Gruber) of "Habermas und die Religion" (Wissenschaftlichen Buchgesellschaft WBG, 2017).
Maureen Junker-Kenny is the author of "Habermas and Theology" (Continuum, 2011) and "Religion and Public Reason. A Comparison of the Positions of John Rawls, Jürgen Habermas and Paul Ricoeur" (De Gruyter, 2014).