Jörundur Hilmarsson (Reykjavík, died 1992, founder and former editor-in-chief), Werner Winter (Preetz, died 2010), Guðrún Þórhallsdóttir (1992-1993 and supervision of the supplementary series 1992-1997), Lambert Isebaert (Louvain/Namur, assistant editor until 2000)