@article{exploringcombinationsofontological,
  title = {Exploring Combinations of Ontological Features and Keywords for Text Retrieval},
  author = {Cao Tru H. and Le Khanh C. and Ngo Vuong M.},
  year = {2018},
  eprint = {1807.07966},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1807.07966v1},
}