1. Agarwal, T. (n.d.). How does the Smart Card Works? Retrieved October 8, 2018, from ElProCus – Electronic Projects for Engineering Students: https://www.elprocus.com/working-of-smart-card/
2. Alliance, S. C. (2011). Card Payments Roadmap in the United States: How Will EMV Impact the Future Payments Infrastructure? Smart Card Alliance. Retrieved from www.smartcardalliance.org
3. Baars, D. S. (n.d.). Towards self-sovereign identity using blockchain technology. University of Twente.