This book has all you need to know for firing copper and bronze clay, the information contained seems pretty complete. I havent read it in depth more just scanned the info and had a look at the projects and what was involved in them. The project's end products arent really to my taste so I havent made any of them, but throughout the projects you can read about different tips and techniques that you can easily apply to your own projects.
Just so you know, you will need a kiln to fire bronze clay - it cant be done like PMC and Artclay silver by blowtorch or camping stove, and you will need some additional equiptment such as a stainless steel container to bury the dried bronze clay in activated charcoal substance for firing - a bit more work but you end up with such asthetically warm pieces with a beautiful tone