1. Gunjan, S., Sushma, L.: Recognition of handwritten Hindi characters using back propagation neural network. Int. J. Comput. Sci. Inf. Technol. 3(4), 4892–4895 (2012)
2. Salma, S.R., Tito, W.P.: A review of various handwriting recognition methods. Int. J. Appl. Eng. Res. 13(2), 1155–1164. Research India Publications (2018)
3. Mahmoud, M.A.G., Ashraf, Y.M.: A comparative study on handwriting digit recognition using neural networks. In: 2017 International Conference on Promising Electronic Technologies (ICPET), pp. 77–81 (2017)
4. Ali, S., Shaukat, Z., Azeem, M., et al.: An efficient and improved scheme for handwritten digit recognition based on convolutional neural network. SN Appl. Sci. 1, 1125 (2019)
5. Pradeep, J., Srinivasan, E., Himavathi, S.: Neural network based handwritten character recognition system without feature extraction. In: 2011 International Conference on Computer, Communication and Electrical Technology (ICCCET), pp. 40–44 (2011)