Hirohisa Seki. Proving Properties of Co-Logic Programs by Unfold/Fold Transformations. In Germán Vidal, editor, Logic-Based Program Synthesis and Transformation - 21st International Symposium, LOPSTR 2011, Odense, Denmark, July 18-20, 2011. Revised Selected Papers. Volume 7225 of Lecture Notes in Computer Science, pages 205-220, Springer, 2011. [doi]