Martín, J.Y. et al. 2026. Analysis of two hydroponic production techniques: floating root and substrate (gravel-coal slag, hydrogel) validated by bioassay in an aquaponics prototype. INVENTUM. 20, 39 (Jul. 2026), 51–65. DOI:https://doi.org/10.26620/uniminuto.inventum.20.39.2025.51-65.