Hyejin Pak and Changsoo Kim and Healahng Choi, Preparation a Study on the Use of the Resident Registration Number and Alternatives for RRN. journal = {International Journal of Information and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology. November 2012, vol. 71(11). 3123 - 3126 [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/68.