@article{valentini2008hcgene,
  title={Hcgene: a software tool to support the hierarchical classification of genes},
  author={Valentini, Giorgio and Cesa-Bianchi, Nicol{\`o}},
  journal={Bioinformatics},
  volume={24},
  number={5},
  pages={729--731},
  year={2008},
  publisher={Oxford University Press},
  url={https://academic.oup.com/bioinformatics/article-abstract/24/5/729/202913}
}