(页面存档备份,存于互联网档案馆) from Stanford university. Doug Hofstadter's dedication to 'I am a strangeloop'. National Academy of Sciences biography. [2013-02-05]. (原始内容存档于2001-06-28)
One Loop. In: Annals of Physics, volume 158, 1984, p. 142 Gasser and Leutwyler: Chiral Perturbation Theory: Expansions in the Mass of the Strange Quark