, ?Papaver somniferum Linn. (Papaveraceae). Bibliography?, Med. Arom. Plants Abstr., vol. 6, pp. 577 - 589, 1985.

K.  Adolphi, Keil, P., Loos, {G. H. }, and Sumser, H., ?Kurze Notizen zu Vorkommen der Mohngewächse Macleaya spec., Meconopsis cambrica und Papaver atlanticum?, Flor. Rundbr., vol. 38, pp. 29?37, 2004.

K.  Adolphi, ?Neophytische Kultur- und Anbaupflanzen als Kulturflüchtlinge des Rheinlandes?, Nardus, vol. 2, p. 272, 1995.

{R. Y. } Berg, ?Adaptation and evolution in Dicentra (Fumariaceae), with special reference to seed, fruit, and dispersal mechanism?, Nytt Mag. Bot., vol. 16, pp. 49?75, 1969.

A.  Baytop, ?The genus Roemeria in Turkey?, in The Davis and Hedge Festschrift: plant taxonomy, phytogeography and related subjects, Edinburgh: Edinburgh, University Press, 1989, pp. 65?70.

H. I.  Aston, ?Hypecoum pendulum L. (Papaveraceae) in Australia - a new introduction?, Muelleria, vol. 3, pp. 177?182, Submitted.

R.  Anderson, ?Meconopsis cambrica Viguier in the Newcastle area, Co. Down.?, Irish Naturalists' Journal, vol. 20, pp. 400?401, 1982.

A.  Lawalrée, ?Fumariaceae?, in Flore Générale de Belgique, vol. 2, Bruxelles: Jardin Botanique de l?Etat, 1956, pp. 141-159.

F.  Fedde, Papaveraceae-Hypecoideae et Papaveraceae-Papaveroideae, vol. 40. Leipzig: Englemann, 1909, p. 430.

H. E.  Baillon, Monographie des Papavéracées et des Capparidacées. 1871.