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\bibitem{Li_etal2023} {\textquotedblleft}\textit{Stomatal shape described by a superellipse in four Magnoliaceae species}{\textquotedblright}. Li Q, Niklas KJJ, Niinemets U, Zhang L, Yu K, Gielis J, Gao J, Shi P, Botany letters , 1 (2023).   http://doi.org/10.1080/23818107.2023.2234443

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