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Hafdís Guðjónsdóttir 1952; Jónína Vala Kristinsdóttir 1952; Edda Óskarsdóttir 1968; Nordic Research network on Special Needs Education in Mathematics fifth : 2010 :Reykjavík(University of Iceland, School of Education, 2010)
Ogilvie, Astrid Elisabeth Jane; Trausti Jónsson 1951; Climatic and environmental history of Northern Europe and the North Atlantic Region over the past 1000 years (1997 :Reykjavík)(Veðurstofa Íslands, 1997)
Þröstur Eysteinsson 1955; Hreinn Óskarsson 1971; Aðalsteinn Sigurgeirsson 1962; Nordic Group for the Management of Genetic Resources of Trees (2002 :Scotland); Norræni Skógerfðafræðihópurinn (2002 :Skotland)(Rannsóknastöð Skógræktar, 03.2003)