  This manuscript describes in some detail the basic features of higher-spin
gauge fields. After presenting some introductory material, I turn to the
different formulations available at the free level and finally end with a
discussion of the Vasiliev equations in four dimensions based on spinor
oscillators.
  From the Laurea Thesis defended at the University of Rome "Tor Vergata" on
July 2004 (in Italian) .
