Former Director at the Center of National Research in Paris an Honorary Professor of the Sorbonne University and of the French Institut for art History [Publications] L'Armement et l'organisation de l'armee khmere, d'apres les bas-reliefs d'Angkor Vat, du Bayon et de Banteay Chmar. Paris, Presses Universitaires de France, 1980. Le Roman, source d'inspiration de la peinture khmere a la fin du 19th et au debut du 20th siecle. Paris, Ecole francaise d'Extreme-Orient, 1982. The Armies of Angkor: Military Structure and Weaponry of the Khmers. Thailande, Kodansha Europe Limited.