@article{Horsman2017,
  title = "{Can a quantum state over time resemble a quantum state at a single time?}",
  author = "Horsman, D. and Heunen, C. and Pusey, M. F. and Barrett, J. and Spekkens, R. W.",
  year = "2017",
  journal = "Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences",
  pages = "20170395",
  url = "http://link.aps.org/doi/10.1103/PhysRevLett.94.050503",
  volume = "473",
  doi = "10.1098/rspa.2017.0395",
}