Magnusen, -. “Fragment of Verses by a Native of Hetland, (Shetland), Written in the Fifteenth Century. From a M.S. in the University Library of Copenhagen; With Notes by Professor Magnusen”. Archaeologia Scotica, Vol. 3, Nov. 1832, pp. 53-55, http://journals.socantscot.org/index.php/arch-scot/article/view/214.