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Wenyan, Xu; Jun, Tang; Changjiu, Ji; Wenjun, He; Ninghua, Tan (2008). "Application of a TLC chemical method to detection of cyclotides in plants". Science Bulletin. 53 (11): 1671–1674. Bibcode:2008SciBu..53.1671W. doi:10.1007/s11434-008-0178-8.