1. Razali Bin Abu Bakar,: Development of Online Unconstrained Handwritten Character Recognition Using Fuzzy Logic, Universiti Teknologi MARA.
2. P. Phokharatkul, K. Sankhuangaw, S. Somkuarnpanit, S. Phaiboon, and C. Kimpan: Off-Line Hand Written Thai Character Recognition using Ant-Miner Algorithm. World Academy of Science, Engineering and Technology, 8, 2005, Pg 276–281.
3. Gunvantsinh Gohil, Rekha, Mahesh Goyani: Chain code and holistic features based OCR System for printed devanagari script using ANN and SVM, IJAIA, Vol. 3, No. 1, Jan 2012.
4. P.Vanaja Ranjan,: Efficient Zone Based Feature Extraction Algorithm for Hand Written Numeral Recognition of Four Popular South Indian Scripts, Journal of Theoretical and Applied Information Technology. pg 1171–1181.
5. Santosh Kumar Henge, Laxmikanth, Niranjan: Advanced Fuzzy Logic controller based Mirror-Image-Character-Recognition OCR, LAICEEE. 3101/01/32-32. Pg 261–268.