@article{DelikostidisEngelRetsiosetal.2013,
  author    = {Ioannis Delikostidis and Juri Engel and Bas Retsios and Corne P. J. M. van Elzakker and Menno-Jan Kraak and J{\"u}rgen Roland Friedrich D{\"o}llner},
  title     = {Increasing the usability of pedestrian navigation interfaces by means of landmark visibility analysis},
  journal   = {The journal of navigation},
  volume    = {66},
  number    = {4},
  pages     = {523 -- 537},
  doi       = {10.1017/S0373463313000209},
  year      = {2013},
}