La Salle, J., & Lefschetz, S. (1961). Stability by Liapunov's Direct Method With applications. Academic Press.
Cita Chicago Style (17a ed.)La Salle, Joseph, y Solomon Lefschetz. Stability by Liapunov's Direct Method With Applications. New York: Academic Press, 1961.
Cita MLA (8a ed.)La Salle, Joseph, y Solomon Lefschetz. Stability by Liapunov's Direct Method With Applications. Academic Press, 1961.
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