This database and the hosting web site have been designed by Bruno Follet-Locatelli and José Todeschini with the help of Francis Buamah, Taylan Sevmili, Jean-Daniel Schultz, students in 3rd year of computer science Bachelor, under the supervision of Dr Sylvie Damy and Dr Renaud Scheifler. All pictures are from Samuel Maas except when otherwise indicated. Visit www.flickr.com/photos/sammaas.