@article {6636,
	title = {Lessons from the English auxiliary system},
	journal = {Journal of Linguistics},
	volume = {56},
	year = {2020},
	pages = {87-155},
	author = {Sag, Ivan and Chaves, Rui and Anne Abeill{\'e} and ESTIGARRIBIA, Bruno and Dan Flickinger and Kay, Paul}
}
