1. A means for achieving a high degree of compaction on scandigitized printed text;Ascher;IEEE Trans. Comput.,1974
2. M. Atallah, Y. Genin, W. Szpakowski, Pattern matching image compression: Algorithmic and empirical results, Computer Science Department, Purdue University, 1995
3. The skew angle of printed documents;Baird;Proceedings of the SPSE 40th Annual Conference and Symposium on Hybrid Imaging Systems,1987