doi dblpCross-Database Micro-Expression Recognition: A BenchmarkYuan Zong | Wenming Zheng | Xiaopeng Hong | Chuangao Tang | Zhen Cui | Guoying ZhaoProceedings of the 2019 on International Conference on Multimedia Retrieval, ICMR 2019, Ottawa, ON, Canada, June 10-13, 2019