"Detection of unexpected leading delays in broad H{\beta} line reverberations in the quasar PHL 1092"
Jian-Min Wang, Chen Hu, Yong-Jie Chen, Yu-Yang Songsheng, Yi-Lin Wang, Hao Zhang, Pu Du, Yan-Rong Li, Bin Luo, Michael S. Brotherton, Jin-Ming Bai, Wei-Jian Guo, Seng Yang, Zhu-Heng Yao, Jesus Aceituno