@article{howusersexploreontologiesontheweba,
  title = {How Users Explore Ontologies on the Web: A Study of NCBO's BioPortal Usage Logs},
  author = {Simon Walk and Lisette Espín-Noboa and Denis Helic and Markus Strohmaier and Mark Musen},
  year = {2016},
  eprint = {1610.09160},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1610.09160v2},
}