http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Equazioni alle derivate parziali a caratteristiche reali
lectures given at the Centro Internazionale Matematico Estivo (C.I.M.E.), held in Varenna (Como), Italy, June 1-10, 1956
Originally published: Florence : C.I.M.E., 1956.
Contains contributions in Italian and French.