Interoperability of Heterogeneous IoT Platforms : A Layered Approach - Palau, Carlos E.; Castay, Valérie; Exarchakos, George; Fortino, Giancarlo; Fuart, Flavio; Giménez, Pablo; Markarian, Garik; Montesinos, Miguel; Mortara, Marina; Pawłowski, Wiesław (Cham Springer International Publishing AG, 2022)