text: *Alloway B.V., Larsen G., Lowe D.J., Shane P.A.R., Westgate J.A. (2007). "Tephrochronology", Encyclopedia of Quaternary Science (editor&mdash;Elias S.A.) 2869–2869 (Elsevier).
  *Þórarinsson S. (1970). "Tephrochronology in medieval Iceland", Scientific Methods in Medieval Archaeology (ed. R. Berger) 295–328 (Berkeley: University of California Press).