id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-4448		cet-4448		6	.pdf	application/pdf	3875	173	38	A system of systems approach to energy sustainability assessment: Are all renewables really green? According to Raza et al. (2014), the two biggest barriers of energy efficiency reported by hospitals participating in the study were related to internal resources, including human resources to control the programs and the costs of the actual energy efficiency actions.	cache/cet-4448.pdf	txt/cet-4448.txt