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\bibitem{Shi_etal2018} {\textquotedblleft}\textit{A general leaf area geometric formula exists for plants evidence from the simplified Gielis equation}{\textquotedblright}. Shi P, Ratkowsky DA, Li Y, Zhang L, Lin S, Gielis J, Forests (19994907) \textbf{9}, 714 (2018).   http://doi.org/10.3390/F9110714

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