Energies, Vol 13, Iss 6, p 1493 (2020) Energies; Volume 13; Issue 6; Pages: 1493 Chaturvedi, T, Torres, A I, Stephanopoulos, G, Thomsen, M H & Schmidt, J E 2020, ' Developing process designs for biorefineries-definitions, categories, and unit operations ', Energies, vol. 13, no. 6, 1493 . https://doi.org/10.3390/en13061493