Skew detection, page segmentation, and script classification of printed document images. - Boulos Waked; Sabine Bergler; Ching Y. Suen; Sami Khoury (SMC, 1998)

Segmenting Document Images Using Diagonal White Runs and Vertical Edges. - Boulos Waked; Ching Y. Suen; Sabine Bergler (ICDAR, 2001)

Automatic Identification of Oriental and Other Scripts in Image Documents. - Ching Y. Suen; Sabine Bergler; Nicola Nobile; Wumo Pan; Boulos Waked (Int. J. Comput. Process. Orient. Lang., 2005)