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@incollection{stanley2004introduction,
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@incollection {athanasiadis00,
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@article {athanasiadis96,
	AUTHOR = {Athanasiadis, Christos A.},
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@article {EHRENBORG201955,
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	TITLE = {Counting faces in the extended {S}hi arrangement},
	JOURNAL = {Adv. in Appl. Math.},
	FJOURNAL = {Advances in Applied Mathematics},
	VOLUME = {109},
	YEAR = {2019},
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@misc{wsj,
	title={Regions of Level $\ell$ of {C}atalan/{S}emiorder-Type Arrangements}, 
	author={Yanru Chen and Suijie Wang and Jinxing Yang and Chengdong Zhao},
	year={2024},
	eprinttype = {arXiv},
	eprint = {2410.10198}, 
}

@article{wsj2,
	title={Level of Regions for Deformed Braid Arrangements}, 
	author={Yanru Chen and Houshan Fu and Suijie Wang and Jinxing Yang},
	year={2024},
	eprinttype = {arXiv},
	eprint = {2411.02971}, 
}