1. Visual impairment and blindness. Retrieved August 17, 2014, from http://www.who.int/mediacentre/factsheets/fs282/en.
2. Singh V., Paul R., Mehra D., Gupta A., Sharma V. D., Jain S., Agarwal C., Garg A., Gujra; S. S., Balakrishnan M., Paul K., Rao P. V. M., Manocha D. ‘Smart’ Cane for the Visually Impaired: Design and Controlled Field Testing of an Affordable Obstacle Detection System, 2009.
3. Ando T., Tsukahara R., Seki M., Fujie M. G. A Haptic Interface “Force Blinker 2” for Navigation of the Visually Impaired. In IEEE Transactions on Industrial Electronics, Nov 2012.
4. Speed Control of Separately Excited DC Motor using Fuzzy Logic Controller;Resha Kushwah;In International Journal of Engineering Trends and Technology (IJETT),2013
5. Zadeh L. A. Outline of a New Approach to the Analysis of Complex Systems and Decision Processes. In IEEE Transactions Systems, Man and Cybernetics, SMC-3, 1973, pp. 28-44.