T-NOVA: Network functions as-a-service over virtualised infrastructures. - George Xilouris; Michail-Alexandros Kourtis; Michael J. McGrath; Vincenzo Riccobene; Giuseppe Petralia; Evangelos K. Markakis; Evangelos Pallis; Alexiou Georgios; Georgios Gardikis; Jordi Ferrer Riera; Aurora Ramos; José Bonnet (NFV-SDN, 2015)