Asadi, Hanieh, Nejad Ebrahimi, Samad, Omrani, Marzieh, Esmaeili, Hassan (2022). Benzofurans nor-sesquiterpenoids from Petasites hybridus rhizomes and absolute configuration by circular dichroism. *Trends in Phytochemical Research*, 6(2), 145-154. 10.30495/tpr.2022.1957782.1256