@manual{Xbase_format,
author = {Erik Bachmann},
organization = {Clickety Click Software},
title = {Xbase File Format Description},
year = {2010},
url = {https://www.clicketyclick.dk/databases/xbase/format/index.html}
}

@book{Astronomical_Algorithms,
author = {Jean Meeus},
publisher = {Willmann-Bell},
title = {Astronomical Algorithms},
year = {1991},
url = {https://archive.org/details/astronomicalalgorithmsjeanmeeus1991}
}

@manual{ESRI_shape,
organization = {Environmental Systems Research Institute, Inc.},
title = {ESRI Shapefile Technical Description},
year = {1998},
url = {https://www.esri.com/library/whitepapers/pdfs/shapefile.pdf}
}

@article{sym10100477,
author = {Hao, Jianqiang and Sun, Jianzhi and Chen, Yi and Cai, Qiang and Tan, Li},
title = {Optimal Reliable Point-in-Polygon Test and Differential Coding Boolean Operations on Polygons},
journal = {Symmetry},
volume = {10},
year = {2018},
url = {https://doi.org/10.3390/sym10100477},
doi = {10.3390/sym10100477}
}
