Pérez-Molina, J. P., Castro Lara, R., Portuguez Brenes, I., Araya Trejos, V., & Quesada Traña, A. (2020). Chlorophyll fluorescence and biomass partitioning within light and nitrogen deficiency: An example of the use of the R programming language for teaching. UNED Research Journal, 12(1), e2629. https://doi.org/10.22458/urj.v12i1.2629