Here's the homepage of what appears to be the author or one of them. He's done a lot of interesting work on logical programming, solvers, etc. I pinged him via

Here's the homepage of what appears to be the author or one of them. He's done a lot of interesting work on logical programming, solvers, etc. I pinged him via email in case he wants to answer anyone's questions about it. http://www.sci.brooklyn.cuny.edu/~zhou/ http://www.sci.brooklyn.cuny.edu/~zhou/