Formula of Concord
A smaller set of this group (Andreä, Chemnitz, Selnecker, Chytraeus, Musculus, and Körner) worked on the document a year later in Bergen Abbey, near Magdeburg, both from March 1–14, and in May, 1577. The most important formulators of the Formula of Concord were Jakob Andreä and Martin Chemnitz.