European cities in the energy transition: A preliminary analysis of 27 cities Egileak: Villamor, Estitxu & Iñaki Barcena et al Urtea: 2020 Non argitaratua: Energies Kuartila: Q1 Liburukia: 16(3) DOI: https://www.mdpi.com/1996-1073/13/6/1315