APA Citation

Salle, J. L., & Lefschetz, S. (1961). Stability by Liapunov's direct method: With applications. New York: Academic Press.

Trích dẫn kiểu Chicago

Salle, Joseph La., và Solomon Lefschetz. Stability By Liapunov's Direct Method: With Applications. New York: Academic Press, 1961.

MLA Citation

Salle, Joseph La., và Solomon Lefschetz. Stability By Liapunov's Direct Method: With Applications. New York: Academic Press, 1961.

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