Chu, Hong-Min, Shao-Wen Yang, Padmanabhan Pillai, and Yen-Kuang Chen. 2018. “Scheduling in Visual Fog Computing: NP-Completeness and Practical Efficient Solutions”. Proceedings of the AAAI Conference on Artificial Intelligence 32 (1). https://ojs.aaai.org/index.php/AAAI/article/view/12080.