We have no longer storage space limitations. Our books are transferred to this new blog. Some of the books used to be in Google books but we had to remove them because of many technical problems in the old service. The new high-resolution e-books (PDF) are available here.
They can be used for reading, printing, distributing, and borrowing from libraries. Most books are under creative commons licenses. The stripped down html-versions are available in our blogs. Please use the blog versions if you can't download or view PDF files.