Cine Film, S.A., Cooperativa Salvador Toscano presentan una producción de Juan Ramón Aupart Cisneros ; investigación, guión, edición, dirección, Juan Ramón Aupart Cisneros
Robofilms, Les Films d'Ici in association with ARTE France-la Lucarne present ; a film by Gianfranco Rosi and Charles Bowden ; directed and photographed by Gianfranco Rosi ; produced by Serge Lalou, Gianfranco Rosi ; co-produced by Charles Bowden