Krækjur

http://hirsla.lsh.is/lsh/bitstream/2336/42293/1/L2008-11-94-R1.pdf http://www.laeknabladid.is/2008/11/nr/3330 http://www.laeknabladid.is/2008/11/nr/3323 http://is.wikipedia.org/wiki/Sp%C3%A6nska_veikin