@article {1585309,
	title = {First M87 Event Horizon Telescope Results. VII. Polarization of the Ring},
	journal = {ApJL},
	volume = {910},
	number = {L12},
	year = {2021},
	pages = {48},
	url = {https://iopscience.iop.org/article/10.3847/2041-8213/abe71d},
	author = {EHT Collaboration et al.}
}
