Pejerrey Florian, Lucia Ximena, et al. “Development of a New Fertilizer Material from the Shell of the Inga Feuillei for Ecofriendly Pens Using Design Thinking”. LACCEI, vol. 1, no. 8, July 2023, https://doi.org/10.18687/LACCEI2023.1.1.605.