What has the author Etienne Michelin written?

It seems you're asking about Édouard Michelin, a French businessman and the former CEO of Michelin, the tire company. There isn't much information about Édouard Michelin's writing.

He was not known for being an author, but he might have given speeches or written articles related to the tire industry or business.

Do you have more context or information about what kind of writing you're looking for? For example, are you looking for specific books, articles, speeches, or something else?