@inproceedings{Gray-et-al-Poster-VIS2015,
  author = {Gray, Cameron C. and Roberts, Jonathan C. and Ritsos, Panagiotis D.},
  title = {{Where Can I Go From Here? Drawing Contextual Navigation Maps of the London Underground}},
  year = {2015},
  booktitle = {Posters presented at the IEEE Conference on Visualization (IEEE VIS 2015), Chicago, IL, USA},
  url = {http://ieeevis.org/year/2015/info/vis-welcome/welcome},
  preview = {https://vimeo.com/groups/vis2015previews/videos/136252426}
}