Text this: Economics of Grids, Clouds, Systems, and Services 15th International Conference, GECON 2018, Pisa, Italy, September 18-20, 2018, Proceedings / edited by Massimo Coppola, Emanuele Carlini, Daniele D'Agostino, Jörn Altmann, José Ángel Bañares. [electronic resource] :