In: KUNZ, A.; STEINMETZ, R. L. R.; AMARAL, A. C. do. Fundamentals of anaerobic digestion, biogas purification, use and treatment of digestate. Concórdia: Sbera: Embrapa Suínos e Aves, 2022. p. 27-40.

http://www.alice.cnptia.embrapa.br/alice/handle/doc/1141342

https://repositorioslatinoamericanos.uchile.cl/handle/2250/4089121