Islenska Alfraedi ordabokin, 1990
Laxárgljúfur and Laxárhraun : a tephrochronological study / by Sigurdur Thorarinsson.
Scientific investigations in the Kebnekajse massif, Swedish Lappland. I. General outline
of the investigations in 1946-51 / by Hans W:son Ahlmann
Surtsey : la nouvelle île de l'Atlantique Nord / Sigurdur Thorarinsson, 1974