1. The Geography of the Flowering Plants, 4th edn, Longman, London (1974).
2. , and , Artemisie, ricerca ed applicazione, Artemisie piemontesi:considerazioni floristiche e fitogeografiche, Supplement 2 “Quaderno Agricolo”, p. 53, Federagrario, Torino (1985).
3. in Aromatic Plants: Basic and Applied Aspects. The Production of Aromatic Plants in The Pancalieri Area, ed. and . Martinus Nijhoff, The Hague (1982).
4. and , Matière Médicale, Vol. 3, Pharmacognosie Spéciale-Dicotylédones-Gamopétales, p. 411, Masson, Paris (1971).
5. Qinghaosu
(Artemisinin): an Antimalarial Drug from China