Exorcism is (1) the act of driving out, or warding off, demons, or evil spirits, from persons, places, or things, which are believed to be possessed or infested by them, or are liable to become victims or instruments of their malice; (2) the means employed for this purpose, especially the solemn and authoritative adjuration of the demon, in the name of God, or any of the higher power in which he is subject. Toner, Patrick. Exorcism. The Catholic Encyclopedia, vol. 5. New York: Robert Appleton Company, 1909.

A.Poleev. Exorcism. Revised print edition 2020. – 115 pages
https://www.epubli.de/shop/buch/101430 (softcover paperbook)
http://enzymes.at/download/exorcism.pdf (pdf A5 format)

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