Pejerrey Florian, Lucia Ximena, Porras Real, Jessica, Paredes Alarcón, José Anthoni, Manzanares Grados, Ruth Aracelis, Curasi Anchayhua, Kelly Ivanna, and Salas Peña, Carlo Anthony Marcos Javier, “Development of a new fertilizer material from the shell of the inga feuillei for ecofriendly pens using design thinking”, LACCEI, vol. 1, no. 8, Apr. 2024, doi: 10.18687/LACCEI2023.1.1.605.