Wittenberg Concord, is a religious concordat signed by Reformed and Lutheran theologians and churchmen on 29 May 1536[1][2] as an attempted resolution of their differences with respect to the Real Presence of Christ's body and blood in the Eucharist.[2] It is considered a foundational document for Lutheranism[3] but was later rejected by the Reformed.
^Raitt, Jill (June 1983), "The Emperor and the Exiles: The Clash of Religion and Politics in the Late Sixteenth Century", Church History, 52 (2), Cambridge University Press: 145–156, doi:10.2307/3166948, ISSN0009-6407, JSTOR3166948, S2CID154372159