@article{Engle_Ruan_prob_crisis,
	author = {Engle, Robert F. and Ruan, Tianyue},
	title = {Measuring the probability of a financial crisis},
	journal = {Proceedings of the National Academy of Sciences},
	volume = {116},
	number = {37},
	pages = {18341-18346},
	year = {2019},
	doi = {10.1073/pnas.1903879116},
	URL = {https://www.pnas.org/doi/abs/10.1073/pnas.1903879116}
}