Tricomi, F. G. 1897- Equazioni a derivate parziali. - Roma: Cremonese, [1957]. - xii, 392 p.: diagrs., 25 cm. Bibliography: p. [383]-386. LCCN: a 58006042 Subjects--Topical Terms: Differential equations, Partial. Dewey Class. No.: 515.35 / T824e