Piringer M, Joffre S, Baklanov A, Christen A, Deserti M, De Ridder K, Emeis S, Mestayer P, Tombrou M, Middleton D, et al. The surface energy balance and the mixing height in urban areas - Activities and recommendations of COST-Action 715. Boundary-Layer Meteorology [Internet]. 2007;124:3-24.