Credits

The main reference for the content of this site comes from the book Der Zalenteufel by Hans Magnus Enzensberger.

Also thanks for Mr. Neal Johnson for reference on number sequences.

All content and images are the original work of Grace Ma with the exception of the background image from Free Webpage Backgrounds. Please see their Terms of Use.

All pages have passed W3C validator as XHTML 1.0 Transitional and have valid CSS.