@article {1531492,
	title = {Verification of Radiative Transfer Schemes for the EHT},
	journal = {The Astrophysical Journal},
	volume = {897},
	number = {2},
	year = {2020},
	pages = {id. 148},
	url = {https://iopscience.iop.org/article/10.3847/1538-4357/ab96c6},
	author = {R. Gold et al.}
}
