Euphorbia antisyphilitica Zucc. Euphorbia antonii Oudejans Euphorbia antso Denis Euphorbia anychioides Boiss. Euphorbia apatzingana McVaugh Euphorbia aphylla
(页面存档备份,存于互联网档案馆) The Calotype Patent Lawsuit of Talbot v. Laroche, 1854, by R. D. Wood Talbot and Photogenic Drawing (页面存档备份,存于互联网档案馆) Science & Society Picture
Volume I: the Ch'in and Han Empires, 221 B.C. – A.D. 220, 377-462. Edited by Denis Twitchett and Michael Loewe. Cambridge: Cambridge University Press, pp 377-388