Highlights of Practical Applications of Agents, Multi-Agent Systems, and Sustainability - The PAAMS Collection International Workshops of PAAMS 2015, Salamanca, Spain, June 3-4, 2015. Proceedings - Bajo, Javier; Hallenborg, Kasper; Pawlewski, Pawel; Botti, Vicente; Sánchez-Pi, Nayat; Duque Méndez, Nestor Darío; Lopes, Fernando; Julian, Vicente (Springer International Publishing : Imprint: Springer, 2015)