The marks of the "true Church" according to Ephraem's "Hymns against heresies" - Griffith, Sidney Harrison (Reinink, Gerrit J. 1945- (edt), Drijvers, Han J. W. 1934-2002 (hnr), After Bardaisan: studies on continuity and change in Syriac Christianity in honour of Professor Han J. W. Drijvers, 1999)