Ranzi, A., A. Freni Sterrantino, F. Forastiere, C. Sartini, G. Casale, R. Cavallini, A. De Togni, L. Gallo, and P. Lauriola. “Asthmatic Symptoms and Air Pollution: A Panel Study on Children Living in the Italian Po Valley”. Geospatial Health, vol. 10, no. 2, Nov. 2015, doi:10.4081/gh.2015.366.