Bartocci P., Tschentscher R., Yan Y., Yang H., Bidini G., Fantozzi F. 2020. Biofuels: Types and Process Overview. In: Srivastava N., Srivastava M., Mishra P., Gupta V. (eds), Biofuel Production Technologies: Critical Analysis for Sustainability. Clean Energy Production Technologies. Springer, Singapore (https://doi.org/10.1007/ 978-981-13-8637-4_1)