@article{dolphinaverbalfluencyevaluationsystem,
  title = {Dolphin: A Spoken Language Proficiency Assessment System for Elementary Education},
  author = {Wenbiao Ding and Guowei Xu and Tianqiao Liu and Weiping Fu and Yujia Song and Chaoyou Guo and Cong Kong and Songfan Yang and Gale Yan Huang and Zitao Liu},
  year = {2019},
  eprint = {1908.00358},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1908.00358v3},
}