Do Technical Writers Need an International Standard for English-Language Spelling?
http://www.tc-forum.org/topiccl/cl21dote.htm

Blicq, Ronald S.
TC-FORUM
1999

Abstract:

He demonstrates how ministers of state who speak different languages often choose English as the most convenient language of communication. He cites the 11-nation European Central Bank in Frankfurt as a typical organization that works only in English. And he notes that many of the journals published by respected international organizations such as the Pasteur Institute also are published in English. TC-Forum is another example.