Lunghezza focale (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Lunghezza focale" in Italian language version.

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archive.org

Eugene Hecht, Optics, 4th, Addison Wesley, 2002, p. 168, ISBN 978-0-8053-8566-3.
Eugene Hecht, Optics, 4th, Addison Wesley, 2002, pp. 244–245, ISBN 978-0-8053-8566-3.

books.google.com

John E. Greivenkamp, Field Guide to Geometrical Optics, SPIE Press, 2004, pp. 6–9, ISBN 978-0-8194-5294-8.