Energy efficiency and energy management in cultural heritage : case studies guidebook - Hrs Borković, Željka; Hartman, Vanja; Kirac, Mislav; Scalet, Mario; Zanki, Vlasta; Grozdek, Marino; Poletto, Davide; Ronchini, Chiara (United Nations Dvelopment Programme in Croatia ; UNESCO Regional Bureau for Science and Culture in Europe, 2013)