Assessing the sustainability of urban eco-systems through Emergy-based circular economy indicators, Santagata, R., Zucaro Amalia, Viglia Silvio, Ripa M., Tian X., and Ulgiati S. , Ecological Indicators, Volume 109, (2020)

Life cycle assessment of Brassica carinata biomass conversion to bioenergy and platform chemicals, Fiorentino, Gabriella, Ripa M., Mellino S., Fahd S., and Ulgiati S. , Journal of Cleaner Production, Volume 66, p.174-187, (2014)

Recycling waste cooking oil into biodiesel: A life cycle assessment, Ripa, M., Buonaurio C., Mellino S., Fiorentino Gabriella, and Ulgiati S. , International Journal of Performability Engineering, Volume 10, Number 4, p.347-356, (2014)