@article{subwordandcrosswordunitsforctcacoustic,
  title = {Subword and Crossword Units for CTC Acoustic Models},
  author = {Thomas Zenkel and Ramon Sanabria and Florian Metze and Alex Waibel},
  year = {2017},
  eprint = {1712.06855},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1712.06855v2},
}