Vladimir Pervouchine Graham Leedham Konstantin Melikhov Three-stage Handwriting Stroke Extraction Method with Hidden Loop Recovery. 307-311 2005 conf/icdar/2005 ICDAR http://doi.ieeecomputersociety.org/10.1109/ICDAR.2005.241 db/conf/icdar/icdar2005.html#PervouchineLM05