1. Arena, U., Mastellone, M.L., 2005. Fluidized pyrolysis and gasification of solid wastes. In: Proceedings of Industrial Fluidization South Africa 2005. The South African Institute of Mining and Metallurgy, pp. 53–68, ISBN 1-919782-83-0.
2. Fluidized bed pyrolysis of plastic wastes;Arena,2006
3. Arena, U., Romeo, E., Mastellone, M.L., 2006. Fluidized bed gasification of solid wastes: analysis of possible deviations of the main process variables. In: Winter, F. (Ed.), Proceedings of the 19th International Conference on Fluidized Bed Combustion. May 21–24, Vienna, Austria.
4. Recursive operability analysis of a pilot plant gasifier;Arena;Journal of Loss Prevention in the Process Industries,2008
5. Arena, U., Zaccariello, L., Mastellone, M.L., 2008b. Gasification of a plastic waste in a fluidized bed of olivine. In: Werther, J., Nowak, W., Wirth, K.-E., Hartge, E.-U. (Eds.), Proceedings of CFB9 – 9th International Conference on Circulating Fluidized Beds, pp. 691–696, ISBN 978-3-930400-57-7.