Subhadip Basu C. Chaudhuri Mahantapas Kundu Mita Nasipuri Dipak Kumar Basu Text line extraction from multi-skewed handwritten documents. 1825-1839 2007 40 Pattern Recognition 6 http://dx.doi.org/10.1016/j.patcog.2006.10.002 db/journals/pr/pr40.html#BasuCKNB07