7Weijie Zhao, Yasuhim Tezuka, Tohru Kikuchi, et al. Studies on the Constituents of Veratrum Plants. I. Constituents of Veratrum maackii Reg. ; Isolation and Structure Ditemaination of a New Alkaloid, Maackinine. Chem Pharm Bull, 1989, 37( 11 ) : 2920.
8Weijie Zhao, Yasuhiro Tezuka, Tohru Kikuchi, et al. Studies on the Constituents of Veratrum Plants. II. Constituents of Veratrum nigrum L. vat. ussuriense. (1). Structure and 1H-and 13C-Nuclear Magnetic Resonance Spectra of a New Alkaloid,Verussurinine, and Related Alkaloids. Chem Pharm Bull, 1991,39(3):549.
9Yasuhiro Tezuka, Tohm Kikuchi, Weijie zhao, et al. Two New Steroidal Alkaloids, 20-Iso-veratramine and Verapatuline, from the Roots and Rhizomes of Veratrum patulum. Chem Pharm Bull, 1998,61 (8) : 1078.