Nemytskii, V. V., & Stepanov, V. V. (1960). Qualitative theory of differential equations. Princeton University Series.
Citace podle Chicago (17th ed.)Nemytskii, Viktor Vladimirovich, a V. V. Stepanov. Qualitative Theory of Differential Equations. Princeton: Princeton University Series, 1960.
Citace podle MLA (9th ed.)Nemytskii, Viktor Vladimirovich, a V. V. Stepanov. Qualitative Theory of Differential Equations. Princeton University Series, 1960.
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