Opitz, Peter: - Peter Opitz is professor emeritus of church history at the University of Zurich and director of the Swiss Reformation Studies Institute. He has been working extensively on the "reformed" Reformers Ulrich Zwingli, Heinrich Bullinger, and John Calvin. He was lead editor of Heinrich Bullinger Werke, whose publication continues, between 2009 and 2023. Since 2009 he has also served as lead editor for the multivolume set Reformierte Bekenntnisschriften and as a coeditor of the book Die Zurcher Reformation in Europa (2021).