Friedrichs, K. O. (1965). Lectures on advanced ordinary diferential equations. Gordon and Breach.
Cita Chicago (17th ed.)Friedrichs, Kurt Otto. Lectures on Advanced Ordinary Diferential Equations. Nueva York: Gordon and Breach, 1965.
Cita MLA (9th ed.)Friedrichs, Kurt Otto. Lectures on Advanced Ordinary Diferential Equations. Gordon and Breach, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.