To cite uci in publications use:

Pereira RHM, Nadalin V, Monasterio L, Albuquerque PH (2013). “Urban Centrality: A Simple Index.” Geographical analysis, 45(1), 166. doi:10.1111/gean.12002, https://doi.org/10.1111/gean.12002.

Corresponding BibTeX entry:

  @Article{,
    title = {Urban Centrality: A Simple Index},
    author = {Rafael H. M. Pereira and Vanessa Nadalin and Leonardo
      Monasterio and Pedro H. Albuquerque},
    journal = {Geographical analysis},
    volume = {45},
    number = {1},
    pages = {166},
    year = {2013},
    doi = {10.1111/gean.12002},
    url = {https://doi.org/10.1111/gean.12002},
  }