See A. A. King, The Rites of Eastern Christendom (2 vol., 1950, repr. 1962); D. Attwater, The Christian Churches of the East (2 vol., rev. ed. 1961); J. Paraskevas and F. Reinstein, The Eastern Orthodox Church (1969); J. Meyendorff, Byzantine Theology (1974); D. J. Constantelos, ed., Issues and Dialogues in the Orthodox Church since World War II (1986).