D. A. Guerrero Echave, J. M. Vera Vilcherrez, J. F. Pingo Lozada, and I. E. García Sanchez, “Systematic review of value-added recycling strategies in coffee processing”, LACCEI, vol. 2, no. 13, Dec. 2025, doi: 10.18687/LEIRD2025.1.1.376.