Problemi di geometria differenziale in grande lectures given at the Centro Internazionale Matematico Estivo (C.I.M.E.), held in Sestriere(Torino), Italy, July 31-August 8, 1958

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Quadratura delle superficie e questioni connesse lectures given at the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Varenna (Como), Italy, August 16-25, 1954

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Equazioni differenziali non lineari lectures given at the Centro Internazionale Matematico Estivo (C.I.M.E) held in Varenna (Como), Italy, September 15-24, 1954

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