- https://futurenviro.es/digital-versions/2020-06/index.html: LIFE-DRY4GAS Project: wastewater sludge solar drying for energy recovery through gasification.
- https://www.avebiom.org/biomasanews: LIFE-DRY4GAS, una solución para los lodos de depuradora - LIFE-DRY4GAS, a solution for sewage sludge.
- https://www.industriaquimica.es/kiosco/revista78/visor: Alternativa energética para lodos de depuradora (proyecto LIFE-DRY4GAS) - Energetic alternative for sewage sludge (LIFE-DRY4GAS Project).
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https://ec.europa.eu/easme/en/life: Web page of LIFE programme.