@article{tp3102,
  title = {A recommendation approach for programming online judges supported by data preprocessing techniques},
  author = {Raciel Yera and Luis Martinez},
  year = {2017},
  journal = {APPLIED IN℡LIGENCE},
  volume = {47},
  pages = {277–290},
  doi = {10.1007/s10489-016-0892-x},
  isbn = {0924-669X},
  keywords = {article},
}