1. L.A. Anderson, R.A. Schultz, T.S. Kellerman, et al. "Onderstepoort Journal of Veterinary Research." 52, "Isolation and characterization of and some observations on poisoning by bufadienolides from Cotyledon orbiculata L. var. orbiculata." 21 (1986)
2. I.A.E. Atkinson, "Problem weeds on New Zealand islands. Science for Conservation 45." (1997)
3. "Botany Letters." "Monographs of invasive species in Europe." 163 (2016–2021)
4. J.G. Campoy, A.T.r Acosta, L. Affre, et al. "Botany Letters." 165, "Monographs of invasive species in Europe: Carpobrotus." 440 (2018)
5. "Pest management strategy." (2018)