Global Covenant of Mayors, a dataset of greenhouse gas emissions for 6200 cities in Europe and the Southern Mediterranean countries oleh A. Kona, F. Monforti-Ferrario, P. Bertoldi, M. G. Baldi, G. Kakoulaki, N. Vetters, C. Thiel, G. Melica, E. Lo Vullo, A. Sgobbi, C. Ahlgren, B. Posnic