
@article {4433,
	title = {Continuity of submatrices and Ritz sets associated to a point in the numerical range},
	journal = {Linear Algebra and its Applications},
	volume = {624},
	year = {2021},
	pages = {1-13},
	url = {https://doi.org/10.1016/j.laa.2021.03.031},
	author = {Kennett L. Dela Rosa and Hugo J. Woerdeman}
}
