1. U Pal and B B Chaudhuri, Indian Script Character Recognition: A Survey. Pattern Recognition, Vol. 37, pp. 1887–1899, 2004.
2. B B Chaudhuri and U Pal, Printed Devnagari Script OCR System. Vivek, Vol. 10, pp. 12–24, 1997.
3. B B Chaudhuri and U Pal, A Complete Printed Bangla OCR System. Pattern Recognition, Vol. 31. No. 5, pp. 531–549, 1998.
4. V Bansal and R M K Sinha, Integrating knowledge sources in Devanagari Text recognition. IEEE Transactions on Systems, Man and Cybernetics, Part A, Vol. 30, No. 4, pp. 500–505, 2000.
5. H Ma and D Doermann, Adaptive Hindi OCR using generalized Hausdorff image comparison, ACM Transactions on Asian language Information Processing, Vol. 26, No. 2, pp. 198–213, 2003.