@inproceedings{DRR-2009-MaatoukJA,
	author        = "Mohamed Neji Maatouk and Ola Jedidi and Najoua Essoukri Ben Amara",
	booktitle     = "{Proceedings of the 16th Conference on Document Recognition and Retrieval}",
	doi           = "10.1117/12.807790",
	isbn          = "978-0-8194-7497-1",
	pages         = "1--10",
	publisher     = "{SPIE}",
	series        = "{SPIE Proceedings}",
	title         = "{Watermarking Ancient Documents Based on Wavelet Packets}",
	volume        = 7247,
	year          = 2009,
}