paper: - Saxon, J., & Snow, D. (2020). A rational agent model for the spatial accessibility of primary health care. [Annals of the American association of geographers](https://www.tandfonline.com/doi/full/10.1080/24694452.2019.1629870), 110(1), 205-222. Source code in python and C++: - [github repo](https://github.com/JamesSaxon/raam)