@article {Henke:2021ity,
	title = {{Singularities of eight- and nine-particle amplitudes from cluster algebras and tropical geometry}},
	journal = {JHEP},
	volume = {10},
	year = {2021},
	pages = {007},
	doi = {10.1007/JHEP10(2021)007},
	author = {Henke, Niklas and Papathanasiou, Georgios}
}
