Alkaloids of Aconitum laeve and their anti-inflammatory, antioxidant and tyrosinase inhibition activities - Shaheen, F; Ahmad, M; Khan, M TH; Jalil, S; Ejaz, A; Sultankhodjaev, M N; Arfan, M; Choudhary, M IAtta-ur-Rahman (Phytochemistry, 2005)