@inproceedings{SAC-2015-WangYCDGW,
	author        = "Pengcheng Wang and Xue Yu and Shuai Chen and Padmaja Duggisetty and Shuo Guo and Tilman Wolf",
	booktitle     = "{Proceedings of the 30th Annual ACM Symposium on Applied Computing}",
	doi           = "10.1145/2695664.2695727",
	isbn          = "978-1-4503-3196-8",
	pages         = "2157--2164",
	publisher     = "{ACM}",
	title         = "{Cryptopaper: digital information security for physical documents}",
	year          = 2015,
}