Salle, J. L. (1961). Stability by Liapunov's direct method with applications. New York, NY.: Academic Press.
Παραπομπή Chicago StyleSalle, Joseph La. Stability By Liapunov's Direct Method With Applications. New York, NY.: Academic Press, 1961.
Παραπομπή MLASalle, Joseph La. Stability By Liapunov's Direct Method With Applications. New York, NY.: Academic Press, 1961.
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