1. IRIT and CLLE, France
2. School of Computer Science and Engineering University of New South Wales, Australia
3. IRIT CNRS / UPS, France
4. CHILI EPFL, Switzerland
5. CLLE Lab UMR CNRS 5263 University of toulouse Jean Jaures, France
6. IPAL CNRS, Singapore, and IRIT CNRS, France