TY - JOUR AU - Mocholi-Arce, Manuel AU - Sala-Garrido, Ramon AU - Molinos-Senante, Maria AU - Maziotis, Alexandros PY - 2021 SN - 0038-0121 UR - https://uvadoc.uva.es/handle/10324/64633 AB - The assessment of water companies’ efficiency, productivity and quality of service is part of the process to set water tariffs and therefore, is relevant for regulators and customers. However, the water industry involves several heterogeneous water... LA - spa TI - Performance assessment of water companies: A metafrontier approach accounting for quality of service and group heterogeneities DO - 10.1016/j.seps.2020.100948 ER -