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
Differential equations Differential equations, Nonlinear sähkökirjat
Springer, with permission of Fondazione CIME Roberto Conti
2010
EISBN 9783642108860
