@article {MR2211179,
	title = {Boolean algebras, Tarski invariants, and index sets},
	journal = {Notre Dame J. Formal Logic},
	volume = {47},
	number = {1},
	year = {2006},
	pages = {1{\textendash}23},
	issn = {0029-4527},
	doi = {10.1305/ndjfl/1143468308},
	url = {https://doi.org/10.1305/ndjfl/1143468308},
	author = {Csima, Barbara F. and Montalb{\'a}n, Antonio and Shore, Richard A.}
}
