@book{77176,
	author = {Heckscher, Gunnar and Chapsal,  J.},
	title = {Démocratie Efficace : },
	publisher = {Presses Universitaires De France,},
	year = {1957.},
	series = {Nouvelle Recherche},
	address = {Paris :},
	url = {https://fll.law.cu.edu.eg/fulltext/bks/B08-05416.pdf}
}