Text this: Economics of Grids, Clouds, Systems, and Services 16th International Conference, GECON 2019, Leeds, UK, September 17-19, 2019, Proceedings / edited by Karim Djemame, Jörn Altmann, José Ángel Bañares, Orna Agmon Ben-Yehuda, Maurizio Naldi. [electronic resource] :