This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help.
Summary
DescriptionMetathesisKatz.svg
English: Metathesis Katz 1974
Date
18 January 2008 (original upload date)
Source
Transferred from en.wikipedia to Commons by T.vanschaik using CommonsHelper.
Author
V8rik at English Wikipedia
Licensing
V8rik at the English Wikipedia, the copyright holder of this work, hereby publishes it under the following license:
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue
Original upload log
The original description page was here. All following user names refer to en.wikipedia.