Sánchez, David A. Ordinary differential equations and stability theory an introduction [by] David A. Sánchez. - San Francisco W. H. Freeman [1968] - vi, 164 p. illus. 21 cm. - A Series of books in mathematics Golden Gate editions. . Bibliography: p. [161]-162. LCCN: 68014226 Subjects--Topical Terms: Differential equationsStability LC Class. No.: QA372 / .S18 Dewey Class. No.: 517/.38