A picture of Yugoslavian spy Dusko Popov know as double agent Tricycle, along with a picture of Maria Elera released, by the Public Records Office along with other documents. * Dusko Popov,
Dusko Popov: The Triple-Agent, Real-Life James Bond Who Warned the U.S. About Pearl Harbor - History
L'étonnante histoire de Dusko Popov, l'agent secret qui a inspiré le personnage de James Bond, mort sur la Côte d'Azur - Nice-Matin