"Optical character recognition Congresses." . . . "DocEng 2012 : proceedings of the 2012 ACM Symposium on Document Engineering : September 4-7, 2012, Paris France" . . . . . . . . "Proceedings of the 2012 ACM Symposium on Document Engineering" . . "Symposium on Document Engineering" . . "DocEng '12" . . . . . . "Document imaging systems Congresses." . . . . "ACM Symposium on Document Engineering (12th : 2012 : Paris, France)" . . .