@book{30525,
	author = {Aigrain, Philippe},
	title = {Sharing},
	url = {https://library.oapen.org/bitstream/20.500.12657/34556/1/409602.pdf||https://library.oapen.org/bitstream/20.500.12657/34556/1/409602.pdf||https://library.oapen.org/bitstream/20.500.12657/34556/1/409602.pdf}
}