Joong-Lyul Lee Stephen C. Kerns Sangjin Hong A Secure IoT-Fog-Cloud Framework Using Blockchain Based on DAT for Mobile IoT. 213-218 2019 UEMCON https://doi.org/10.1109/UEMCON47517.2019.8993056 conf/uemcom/2019 db/conf/uemcom/uemcom2019.html#LeeKH19