Where does the website content comes from?

Part of the content is produced by Antoine van Kampen. Other parts were copied from various resources including internet or books. Some of this copied information could be used on my website since it is licensed under Creative Commons. There is also copyright protected information on my website but never long excerpts. I always tried to acknowledge the sources of this information but realize that I may have failed to do this occasionally but not intentionally. In case you want me to remove content that you produced, or to (more) properly acknowledge it then drop me an email.