1. Fugro Rovtech Limited - Libya; N/122 Zone Geragarsh Road, Hai Al-Andulus, km7 PO Box 91730 Tripoli Libya
2. Institute of Geology and Geochemistry of Petroleum and Coal; RWTH Aachen University; Lochnerstr. 4-20 52056 Aachen Germany
3. David Boote Consulting Limited; 12 Elsynge Road, London SW18 2HN