@inproceedings{contextualstringembeddingsforsequence,
  title = {Contextual String Embeddings for Sequence Labeling},
  author = {Alan Akbik and Duncan Blythe and Rol Vollgraf and },
  year = {2018},
  booktitle = {COLING 2018 8},
  url = {https://aclanthology.org/C18-1139},
}