1. Automobile Club d’Italia (ACI) (2008) According to recent reports, in Varese province new cars with a diesel engine tend to reach in number those relying on gasoline, following an Italian and European trend. Thus, diesel equipped cars that amounted to 32% in 2001–2002, increased to 44% in 2006–2007
2. Bikhazi AB, Salameh A, El-Kasti MM, Awar RA (1995) Comparative nephrotoxic effects of cis-platinum(II), cis-palladium(II) and cis-rhodium(III) metal coordination compounds in rat kidneys. Comp Biochem Physiol 111(3):423–427
3. Botrè C, Tosi M, Mazzei F, Bocca B, Petrucci F, Alimonti A (2007) Automotive catalytic converters and environmental pollution: role of the platinum group elements in the redox reactions and free radicals production. Int J Environ Health 1(1):142–152
4. Centro Geofisico Prealpino, records are available at: http://www.astrogeo.va.it/statisti/statmet.htm
5. Comune di Varese, Ufficio Tecnico Traffico e Trasporti (2003) PIANO URBANO DEL TRAFFICO—quadro conoscitivo e strategie d'intervento, quaderno N.1, Gennaio 2003