@article{pop2012directed,
  title = {A directed particle system for optimised visualization of blood flow in complex networks.},
  author = {Pop, Serban R and Hughes, Chris J and Ap Cenydd, Llyr and John, Nigel W},
  journal = {Studies in health technology and informatics},
  volume = {184},
  pages = {330--336},
  year = {2012}
}