but the website is down - I did download a bunch of his work before. I told his sons Mathias and Paul about the website, but nothing happened. You can find him of course at galleries and museums, like this one: http://www.galerielehner.at/index.php?artist=1&lang=de
And when you talk about fun, you probably talk about this one:
Ha ha, yes, I know that one. =)
Maybe his sons are embarrassed by their father and that's why they have taken no action.