Acknowledgements
I would like to thank various people who have differently contributed to this book: Giovanni Agosti, Edith Bernhauer, Christine Cahill, Katelyn Chin, Luca Crescenzi, Mauro Della Valle, Stefania Delli Castelli, Walter Delli Castelli, Marianne Eaton-Krauss, Dimitri Laboury, Gerardo Mandara, Peter Der Manuelian, Marlou Meems, Julianna Paksi, Patrizia Piacentini, Gabriele Pieke, Marta Rapi, Katerina Sofianou, Philipp Seyr, Hourig Sourouzian, Billy Sullivan, Pae White.
This book has been written while benefiting from a PhD research grant of the Université de Liège to which institution I would like to extend my gratitude.