Ladde, G. (1987). Oscillation theory of differential equations with deviating: Arguments. Marcel Dekker.
Cita Chicago (17th ed.)Ladde, G.S. Oscillation Theory of Differential Equations with Deviating: Arguments. New York: Marcel Dekker, 1987.
Cita MLA (9th ed.)Ladde, G.S. Oscillation Theory of Differential Equations with Deviating: Arguments. Marcel Dekker, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.