Hardt, Michael, and Antonio Negri. Multitude: War And Democracy In The Age Of Empire. New York: Penguin Books, 2004.

Hardt, Michael, and Antonio Negri. Empire. Cambridge, Massachusetts; London, England: Harvard University Press, 2000. www.infoshop.org/texts/empire.pdf.

Negri, Antonio, Maurizio Lazzarato, Paolo Virno, and Thomas Atzert. Umherschweifende Produzenten : Immaterielle Arbeit Und Subversion. Berlin: ID-Verl., 1998.