Simon Thompson ISBN 0-201-41667-0, Addison-Wesley, 1991. This is now out of print. I had hoped to prepare a revised version before making it available online, but sadly this hasn't happened. So, you can get the original version, warts and all, from CafePress or free from here. Any errata will be gratefully received and added to the list below. Preface (html) Contents and Introduction (PostScript)