1. Walmart, Walmart U.S. Our Business, 2020, Walmart
2. Heramb, C., Street and Site Plan Design Standards, 2007, City of Chicago, https://www.chicago.gov/dam/city/depts/cdot/StreetandSitePlanDesignStandards407.pdf
3. Spatio-temporal voxel layer: A view on robot perception for the dynamic world
4. Sensor Technologies and Simultaneous Localization and Mapping (SLAM)
5. Efficient Sparse Pose Adjustment for 2D mapping