Downham, Clare (2004): «The historical importance of Viking-Age Waterford», , s. 71–96 Downham, Clare (2007): , Edinburgh Etchingham, C. (2007): «The Location of Historical Laithlinn/ Lochl (i)nn: Scotland or Scandinavia?’», i Ó Flaithearta, M., red.: – Uppsala, s. 11-31. Ó Corráin, D. (1998): «Viking Ireland – Afterthoughts», i: Clarke, Mhaonaigh, Ó Floinn red.: . Dublin, s. 421–452.