Culvenor et al., 1980. Aust. J. Chem., 33 (5): 1105-1113 Document reference Culvenor, C. C. J. ; Edgar, J. A. ; Frahn, J. L. ; Smith, L. W., 1980. The alkaloids of Symphytum × uplandicum (Russian comfrey). Aust. J. Chem., 33 (5): 1105-1113Web https://doi.org/10.1071/CH9801105Citation key Culvenor et al., 1980Datasheets Russian comfrey (Symphytum × uplandicum)
