Mahdi Naghibi Adel Torkaman Rahmani Focused Crawling Using Vision-Based Page Segmentation. 1-12 2012 ICISTM http://dx.doi.org/10.1007/978-3-642-29166-1_1 conf/icistm/2012 db/conf/icistm/icistm2012.html#NaghibiR12