http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
lectures given at the Centro internazionale matematico estivo (C.I.M.E.) held in Varenna (Como), Italy, August 24-September 2, 1980
C.I.M.E. Summer School (1980 : Varenna, Italy)
Originally published: Napoli: Liguori, 1980.