id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajeer-2026	Zhang, Shaojie	Voluntary Environmental Regulations and Firm Innovation in China	2020	7	.pdf	application/pdf	6203	364	43	Environmental innovations and firm profitability: Unmasking the porter hypothesis. Lessons from innovation empirical studies in the manufacturing sector: A systematic review of the literature from 1993–2003.	cache/ajeer-2026.pdf	txt/ajeer-2026.txt