Many have contributed to this Guidebook. Special thanks are due to Bruno de Cazalet, Edward Farquharson, Joseph Infante, Yehudah Raveh, Jan van Schoonhoven, Anthony Smith, Arthur Smith, Vladimir Varnavskiy and Caroline Visser for their expert comments. Robert Lalka, Polina Tarshis, Catherine Gaudry, Tatiana Chernyavskaya, Tatiana Apatenko and Victoria Goudeva helped in the production of the Guidebook. The secretariat team was led by Geoffrey Hamilton.