@book{119063,
	author = {Levi-Civita, Tullio, and Dougall, John,},
	title = {A simplified presentation of Einstein's unified field equations},
	publisher = {Project Gutenberg,},
	year = {2026},
	address = {Salt Lake City, UT :},
	note = {Release date is 2026-04-02},
	url = {https://catalog.hathitrust.org/Record/001477540}
}