Characterization and leaching of NiCd and NiMH spent batteries for the recovery of metals, Pietrelli, L., Bellomo B., Fontana Danilo, and Montereali Maria Rita , Waste Management, Volume 25, Number 2 SPEC. ISS., p.221-226, (2005)

Rare earths recovery from NiMH spent batteries, Pietrelli, L., Bellomo B., Fontana Danilo, and Montereali Maria Rita , Hydrometallurgy, Volume 66, Number 1-3, p.135-139, (2002)

Processo idrometallurgico per il recupero di metalli da batterie esauste per telefonia mobile, Pietrelli, L., Bellomo B., Montereali Maria Rita, and Ricci S. , Proceedings of the 3rd Congress and International Exhibition on the Added Value and Recycling of Industrial Waste, p.270-275, (2001)

Metal recovery from NiMH batteries: Characterisation and leaching tests, Pietrelli, L., and Bellomo B. , Proceedings of the 5th International Battery Recycling Congress, p.27-29, (1999)